Celebrating the intersection between music and technology. Jeffrey brown takes us to a festival pushing the bounds of sound. Theres something to be said about all music being some translation of our language and our way of communicating. Its a language. This is a new language. Woodruff all that and more, on tonights pbs newshour. Major funding for the pbs newshour has been provided by moving our economy for 160 years. Bnsf, the engine that connects us. Supporting social entrepreneurs and their solutions to the worlds most pressing problems skollfoundation. Org. The lemelson foundation. Committed to improving lives through invention, in the u. S. And developing countries. On the web at lemelson. Org. Supported by the john d. And catherine t. Macarthur foundation. Committed to building a more just, verdant and peaceful world. More information at macfound. Org and with the ongoing support of these institutions this program was made possible by the corporation for public broadcasting. And by contributions to your pbs station from viewers like you. Thank you. Woodruff the investigation into monday nights bombing in manchester, england, is spreading. 22yearold britishborn salman abedi blew himself up at a concert monday night, killing 22 people. Today, police in libya arrested his father and younger brother. British Officials Say abedi recently returned from libya. Meanwhile, several more arrests in manchester. Ciaran jenkins of independent Television News has that story. Reporter this is now a hunt for Salman Abedis accomplices. Armed police and special forces forced their way into a Central Manchester property earlier. It took a controlled explosion to get them in. In the south of manchester, three more arrests, and another in wigan tonight, followed the arrest yesterday of abedis older brother. Now there is a real urgency to Police Activity in this city today. Remember, the current threat level means an attack is expected imminently. Police want to know if there are more bombs in circulation, or if there are other potential attackers. And crucially, who made this mans deadly device . Police have yet to say definitively if it was the work of an accomplice, but this afternoon, the first confirmation that abedi did not act alone. Do you believe somebody else put the bomb together, and are you searching for that person . Is this a search now for a bomb maker . I think its very clear that this is a network that we are investigating. And as i said, it continues at a pace. Theres extensive investigations going on and activity taking place across Greater Manchester as we speak. Reporter the threat level is at its highest, for the first time in ten years; the Army Enlisted to protect key landmarks at Buckingham Palace and in westminster. Manchester Armed Police Patrol piccadilly station and the arndale shopping system. Its not going to stop me going about my daily life or anything like that. Its just something in the back of the mind thats a bit scary. It really all just feels like a different place, you know. Reporter as the hours pass, we learn a little more of the innocent children who were killed, and the adults who accompanied them. Michelle kiss, a mother of three, taken, her family said, in the most traumatic way. And, kelly bruster. Her friends said she died saving a young life, throwing her body on her niece as the bomb exploded. Saffie roussos, from leyland, was the youngest victim, eight years old. Saffie was simply a beautiful little girl in every aspect of the word. She was loved by everyone, and her warmth and kindness will be remembered fondly. Saffie was quiet and unassuming, with a creative flair. Reporter there is resilience in a manchester all too conscious of the stillimminent threat, but there is impatience too, to see those who brought horror to this city taken off the streets. Woodruff this evening, police in manchester made another two arrests. And, britains home secretary criticized u. S. Officials for leaking the name of the bomber and other information. In the days other news, the Congressional Budget Office issued its analysis of the republican bill to replace obamacare, which passed the house. It estimates the bill would leave 23 million more Americans Without Health Insurance by 2026. That is one million fewer than an earlier version. The report also projects deficit reduction of 119 billion over ten years, much less than before. Well take a closer look, later in the program. Word has leaked that President Trump disclosed that the u. S. Had positioned two Nuclear Submarines off north korea. The New York Times reports, mr. Trump revealed the information in an april 29 phone call with philippines president rodrigo duterte. According to confidential transcripts, he also said duterte is doing an unbelievable job fighting drugs. Thousands of drug suspects have been killed since duterte took office. Fighting raged for a second day in the southern philippines, where islamist militants have seized control of a city. At least 21 people have been killed. The fighting broke out yesterday in marawi city, on the island of mindanao. President duterte responded by imposing martial law. Thousands of residents fled the area today amid tight security, as duterte vowed to hunt down the militants. If i think you should die, you will die. If you fight us, you will die. If there is an open defiance, you will die. And if it means many people dying, so be it. Woodruff the philippines president also said he might extend martial law nationwide, if the Islamic State group gains a foothold. Taiwan will become the first asian nation to legalize samesex marriage. The countrys Constitutional Court ruled today that a ban on such unions violates the taiwanese constitution. Now, lawmakers have two years to enact new laws or amend the current statutes. If they do not, couples will be allowed to submit a written document to have their marriages recognized. In economic news, moodys Rating Service lowered chinas Credit Rating by one notch because of its surging debt load. Beijing protested the decision. And on wall street, the Dow Jones Industrial average gained 74 points to close back above 21,000. The nasdaq rose 24 points, and the s p 500 added six. Marking a new record. Still to come on the newshour i speak to senator Dianne Feinstein about the latest in the russia investigation. The president meets the pope, after trading barbs with him last year. Montana prepares for a special congressional election. And much more. Woodruff there are now multiple investigations into russian interference in the 2016 president ial election, and any possible ties to the Trump Campaign. On capitol hill, weve heard they have expanded to look into a possible cover up. There are many questions swirling around, and we put some of them to senator Dianne Feinstein of california. Shes a member of the Senate Select committee on intelligence, and the Ranking Member of the Senate Judiciary committee. Senator feinstein, thank you very much for talking with us. First about those memos that were written by former f. B. I. Director james comey. I know your committee has been asking for those. Have you received them yet from the f. B. I. . No, not to my knowledge, we have not. Woodruff do you expect to get them . Well, thats an interesting expectation. There are two answers. One is yes and one is no. I think were serious. I believe were serious. Then we have to take the next step. We have invited very politely the former director to come meet with us and be able to ask him questions in public. Howeverrers he has agreed to go before intelligence, which i appreciate. Im on the committee. But i think he also ought to provide the documents to our committee and be willing to come and explain those documents. We are the Oversight Committee, after all. He has said he wants to make a public appearance. Hell do that at intelligence, and i think he also should provide those documents and make an appearance at judiciary and explain them. Woodruff how much of an obstacle is it, senator , if those documents are not turned over. Well, i mean, one way or another, theyre going to be turned over. I think its just a question of time. I think his documents are fundamental to the issue of his firing. How many times did he meet with the president . What were the circumstances . What was said . And was there any unusual request, such as leading to an investigation, potential investigation of the president of the United States . And i think thats something that, one way or another is going to come out, and those documents will come out, and its quite proper that they do so. Thats what he kept notes to be able to protect himself in the event of something thats untoward. Woodruff senator , how much of this investigation do you expect may ultimately be about any efforts by the president or by the white house, the administration to stop or slow down this investigation . Hard to tell. I dont think i can answer that at this stage. I think the president its interesting the president is apparently in the process of retaining outside counsel. That would likely have to do with an event that an investigation might reveal. I am one that believes that both the House Intelligence Committee and the senate Intelligence Committee ought to add investigators and people with prosecutorial expertise to the staff for this investigation. I think it has to be well known, now, that even the 9 11 commission had about 100 staffers and people with prosecutorial experience and investigative experience. We, in the Intelligence Committee, have our intelligence staff, and theyre accustomed to reading and interpreting intelligence, and theyre very good at what they do. But one of the things thats been brought to my attention is that you need technical people, if youre going to follow the money. Woodruff right. As representative spear said and get involved with finance, you need financing people to show you how to get the appropriate information in the appropriate way. If its an investigation youre looking at, you need people, i think, who are trained investigators. Woodruff senator , if i may, it sounds as if youre saying this investigation, the potential size of it has grown much languager than even what it seemed to be a week ago. Well, i think thats right. I think that is happening. I think, as events go and comments are made by principal parties, it adds to the investigative material thats out there and i think that what both the house and the senate needs to do is create the atmosphere where bob mueller could come in as an absolutely responsible and respected former prosecutor, former u. S. Attorney, former director of the f. B. I. And be the special counsel and see that the f. B. I. Counterterrorism investigation and criminal investigation its both are able to proceed as rapidly as possible. Woodruff the Washington Post reported last friday, senator , im sure you know, that the investigation that there is a person of interest in this investigation who is a senior official in the Trump White House whos very close to the president. Do you know who that is . No, i do not. I read the same article but i do not know who that person is. Woodruff are you getting the cooperation from everyone youre seeking we know that general Michael Flynn has declined to turn over documents, but other than general flynn, are there others who are not cooperating . I think, with respect to the judiciary committee, senator grassley and i spoke on the floor, and weve written letters asking for materials and asking that mr. Comey, inviting him to appear. I think we perhaps need to do more than just invite. I think its important that he come before the Oversight Committee that has responsibility for oversight of the f. B. I. And at least do us the courtesy of appearing and that we should be able to look at his material and ask questions about them. So i think both senator grassley are on the same pathway to that and, hopefully, well be able to accomplish it. Woodruff and senator, i want to turn you to one other issue thats much before congress right now and that is the healthcare reform bill that passed the house of representatives. Its now in the senate. The Congressional Budget Office came out just this afternoon with its own estimate of the cost and the implications and, among other things, it says that almost as many people will be without insurance under this proposed legislation as there was in the original republican proposal. Is it your sense this bill has a chance in the u. S. Senate right now . Well, not knowing whats in it, its my understanding there was a committee of about 12 men appointed from the senate to put together a bill. I think the same mistake was made in the senate that was made in the house. No hearings. The medical profession has no chance to respond. The Insurance Industry cant respond. Those people that run hospitals cant respond, and the general public cant respond. Its unbelievable. This is the first time in my over 20 years in the senate a big bill, a costly bill, a bill important to every single american citizen has no hearing and goes right on to the floor as some kind of secretive document. I have no idea whats in the senate bill. Its not the way business should be done. It creates an atmosphere that makes a bill more difficult to pass not less difficult, and it certainly gets the emotions going. You have 24 Million People who are going to be without insurance. It makes no sense to me. Woodruff well, well certainly all be watching to see what happens to it in the senate. Senator Dianne Feinstein, we thank you. Thank you, judy. Woodruff now, we return to the Manchester Attack and the ongoing investigations happening in britain. William brangham takes a deeper look. Brangham as british investigators continue to piece together who was behind this attack, and try to stop another from occurring, we wanted to take a closer look at just how the u. K. Handles counter terrorism. For that, im joined by r. P. Eddy. He served on the staff of the National Security council during the Clinton Administration and worked closely with british officials. And, he is the author, along with richard c. Holbrook, of warnings finding cassandras to stop catastrophes. R. P. Eddy, thanks very much for being here. I wonder if you could start off by telling us the distinctions that u. K. Intelligence and terror officials have as compared to say, u. S. Officials . Well, overall, its a fairly similar system. There is probably two key differences. One is its easier to open up investigations and surveillance on individuals in the u. K. , british citizens or others, than it is in the United States. The second thing is that we have an inverted model. In the United States, for example, here im sitting in new york city, the nypd would go out and collect much of the intelligence about a potential terrorist attack, and then the f. B. I. Would make the arrest, depending on the maturity of the intelligence collection in the city. In the u. K. , its opposite. The metropolitan Police Service or the local police would actually do the arresting where mi5 and mps would do the intelligence gathering. The key difference is its easier to begin surveillance on people of concern. Brangham and the u. K. I know also has a wide network of cctv cameras where i know thats been relevant tool in prior terror investigations. Its a massive difference. They adapted the use of closed circuit televisions much earlier than the United States in our major cities. In three terrorists investigations since the 80s, cc tvs have been hugely useful in very quickly figuring out who is behind it and wrapping up the cell. That and the laws, most of these things are children of growing up in the era of the i. R. A. Threat, so they addressed their terrorism threat and got over some of their learnings earlier than we did. Brangham even with the tools, its clear the u. K. Officials missed this plot. This is an indication to me of how difficult it is to identify individuals or a group of individuals who are trying to plot quietly these types of attacks. Lets say there is probably two big reasons for that, the first is technological. Youve heard a number of u. S. And British Government officials over the last three or four years bemoan the fact that its much easier now to encrypt your communications on your cell phone or internet to a military grade level than it used to be. So in some instances were blind as we try to do collection on signals intelligence. So thats the first reason its harder, much harder. The second reason is i. S. I. S. Is different than al quaida. Part of why theyre different is theyre more willing to allow or to foster what you would call retail attacks, small attacks by lone wolves or people who are just sort of getting converted into extremism by i. S. I. S. , where al quaida as we know is more interested in largescale attacks, taking down huge buildings, blowing up buildings, doing things simultaneously. So the latter model, al quaida, the easier to find, requires more planning, cells and training. The i. S. I. S. Model, being an idea of mass destruction is harder to catch. Someone can be converte