christmas all eyes are on a much anticipated returned by the princess of wales where alive outside buckingham palace with the very latest let's the us president and his rival on the campaign trail preparing to face off at their first presidential debate. >> and russia is president's lays out term to me, he is war ukraine responds with a hard nut in just about two hours time. >> the uk hughes, catherine princess of wales is expected to appear in public for the first time in nearly six months. the surprise announcement came friday, along with a photo taken at windsor and an update on her battle with cancer. princess catherine says she's making progress, but isn't out of the woods yet. >> still in the coming hours she set to attend trooping the colour events. the official celebration of the monarchs, birthday, king charles said he's quotes, delighted that she will be there well, cnn correspondent anna stewart joins us now outside london's buckingham palace. >> and anna, this is of course the king's birthday parade, but all eyes no doubt will be on kate. what can we expect to see from the princess of wales and tell us about the reaction from the public to her upcoming appearance it certainly added quite a lot of excitement to the event. >> of course, lots of people always keen to see the king and the king's, birthday parade. but now having not seen the princess of wales for so many months, there'll be a lot of eyes on lack carriage which we expect to lead buckingham palace here in about 1.5 hours. the princess of wales is also the regimental colonel of the irish guards, which is actually the regimen that is being troops today, which is the showing of the flag and happens every year to mark the king's official birthday. the second birthday really for the monarch, it's always celebrated on the second june of the year, on the weekend simply because monarchs aren't always born at the right time of year it further uk, whether so ideally, in june it is sunny. i expect we're going to get a downpour pretty soon though anna. but all eyes on the princess of wales. and of course, what should be wearing and how should we looking she looked very well in the photos released yesterday, but we do know of course, that she's still undergoing treatment and has good days and bad days in her message. >> and she wrote, i'm not out of the woods yet making good progress, but there are good days and bad days. i am sure that there are countless cancer patients out there who can certainly identify with those sentiments of course, i think she's really captured the heart of the nation with this very personal message. i think that's what's making this relationship in a way way between the current royal family and the public really quite different. there's a lot more information that we're getting for the princess of wales, perhaps not on the exact cancer that she's been treated for, but on how she is feeling, how she has been coping with the last few months and for that, i think the public very keen to be able to see her and celebrate her return, but only a part returned to work at this stage. so we're told that she'll start to appear at some engagements in the future, but we'll take it as a case-by-case basis on the advice of medical team. but today is a really joyful occasion and actually i have to say deepen the color, also known because the king's birthday parade is one of the best events in the royal calendar, because you've got all the pomp and pageantry, but you also have all the family united for that mayes imbalance can you seen at the end when you have them all waving and it was looking quite sad to think that the prince of wales wouldn't it be a part of that so i think from the public's perspective, that's really put bright light in the de, even if it does rain, it'll feel a bit stormier on a and you have a front row seat, anna. so all is well in the world and a stuart joining us from london well, the message from the princess of wales mentioned that her chemotherapy is ongoing and will be for a few more months she is not revealed the type of cancer she's being treated for, but the treatment may provide some clues about the severity of her illness. cnn's chief medical correspondent, dr. sanjay gupta, explains a lot of terms being used here around princess catherine, just a lovely picture that we see of her there preventative chemotherapy is the term that is often being used. >> and i think a lot of people may have interpreted that as a type of chemotherapy that can prevent cancer some of this may just be semantics, but i think what we're talking about here specifically is something that is more commonly known as adjuvant therapy. so this is an additional therapy in addition to the operation that she had several months ago so different types of therapies out there, they can take several months of scheduled chemotherapy. we don't know what type of cancer we don't know what type of therapy. and she is totally entitled to her privacy. we won't speculate on that, but i will tell you the types of factors that go into the consideration here. the type of cancer obviously the types of medications that are being used, the stage of that cancer that will all play a role in determining what, how long the therapy is likely the last. and also what types of side effects she might have she in the statement says she's not out of the woods yet and probably really means two things. how well does the medication, the chemotherapy work? is it actually helping with the existing cancer and what are the side effects? good days and bad days. and you can see the list i've side effects. there are people get exhausted while on these medications and you can change day to day in terms of how you feel even hour to hour but also like brain fog and difficulty with pain even in the limbs, there's all sorts of things that can happen in response to chemotherapy so that may be what she means by good days and bad days as you may remember, princess catherine, 42-years-old. here is a timeline of how things progressed over the past several months it was the middle of january, january 16, when she was admitted for that abdominal operation. at that point, they thought whatever they were doing was not related to cancer. but then subsequently, we heard that in fact, the she has cancer, so they may have actually examined some of the tissue under the microscope and found in fact, she did have cancer. and that is now led to this time period since february where she's been undergoing chemotherapy and will likely undergo that for some time. again, depending on the type of cancer that can be months, six to nine months, even if chemotherapy, sometimes longer or shorter, depending on the specifics but that is what we know at this point. again, we don't know what type of cancer we don't know what type of therapy and we're not going to speculate on any of that, but it is good to see that picture of her guys back to you sanjay gupta. >> thank you. well, let's get perspective now from cnn royal historian, kate williams, she joins us also from buckingham palace great, good to see you, kate. >> do you see this public appearances as a positive sign about pizzazz catherine health and progress of her treatment well, i know it was just so wonderful to hear from the princess yesterday. we've all been worried about as she's been through so many tough times. we haven't seen her since christmas. that was her last engagement really is i think so delighting to us to be able to see her today in the carriage with the children with charlotte, with lewy, with george, they'll all be traveling together. we believe prince william is going to be on horseback so kate will be in the carriage and in terms of a return to work a brief return to work, as she says it says, i mean, this is a big moment. i think i personally was affecting how to do a smaller engagement, but all the eyes of the world beyond should be on, on the front pages tomorrow. this is a huge moment and i think it really does show that she says she's having good days and bad days. she says in home very moving statement, she's not out of the woods yet, but clearly, it's a very hopeful sign and perhaps in the autumn at the end of the year, we might see her back to work full time you surprised by what she shared in that personal message? >> how open she was? >> i think the message was i think the message was so personal. she was so open just as anna was saying earlier, we don't know what cancer she has. she may never tell us it is her private information but at the same time, she's telling us a lot about her her feelings, what she's going through. she is saying i feel weak, i feel tired. i have to rest and i think that really is unprecedented. normally, we don't know anything about oils health, for example bumble the queen's father, we didn't know he was very ill until he did pass away and we weren't given much insight into the queen of the duke of edinburgh, but this is a new openness. i think we're seeing a new royal family with his openness, with width speaking directly to the public. and i think that's most of all because as kate was saying, she understands how many other people are going through what what she's going through and both she and the king wants to be a beacon. they want to be a support for all of those people across the world who are cancer sufferers in cancer survivors what has been the reaction, the overwhelming reaction, no doubt from the british public about returning to the public even though this is obviously not a return to duty, is, but still how people responded they are absolutely thrilled. kate, what didn't come to the rehearsals, i think most people thought she wasn't going to come to this and the crowds i've just been out talking to them they're all lining up. they're all got union jack hats on this so excited they've got their picnics and i've just they just so thrilled to see her, thrilled to see she's such a voice superstar. she's been avoidable superstar since the minute he was engaged to william people crown let's turn out for kate and they are delighted to see it wonderful to see the king, the king in a carriage. we do expect leaving the palace and about now and a half one who see the king on one, or the royal family together. it's the second trooping the colour for the king and the king's big birthday parade that he he has every year at this time of year, which is supposed to be chosen because of the nice weather, but it is probably going to rain. but we often have rain on both occasions and that just makes them more phone. i think the crowds are so excited, but you can't dampen the spirits to see kate out and we're all just so thrilled to see how in choosing looking so well in that photo we saw yesterday and i'm expecting really a real chair to go when we see her talk to us about the close relationship between princes kd and king charles and how that perhaps plays into her decision to attend the king's birthday parade the king talks, has talked about the princess kate as beloved daughter in law. >> he's talked about how he's delighted he gave us statements saying he's delighted that she's going to be with him today. it was a really moving statement and we know that they were both in hospital together in january. kate for her abdominal surgery, the king for his also for surgery, and that we understand that he left his hospital room to go over to her room to come unfettered to make her feel better. i really do think that shows the moving nature of the relationship between them. she's like a daughter to him. she's not a daughter-in-law. she's a daughter to him and he really is delighted to see how they're that the, all the royal family are going to be out there supporting him. the queen, camilla's going to be there, williams going to be there. the children are going to be there the balcony wave, i think it will be such a wonderful picture and showing how much support the king does have williams also always wonderful to get your insight. >> thank you so much for joining. >> good to say with less than, two weeks to go until the first us presidential debate, which will be hosted by cnn in atlanta. >> it's gonna shine for president joe biden and republican donald trump to prepare are joining from the g7 summit in italy. biden will spend saturday in los angeles for a fundraiser with a lineup of hollywood celebrities. trump is in michigan this weekend where he hopes to reach black voters on friday, the former president attended an event in west palm beach and celebrated, his 78th birthday and democrats, a capitalizing on trump's recent description of the wisconsin city that will host the republicans convention he called milwaukee horrible city now the democrats have put up ten billboards across milwaukee with trump's comments i'll kristen holmes has more on how trump is approaching the run-up to the debate, including celebrating his birthday in florida. but first two, i'll let sayings in los angeles with the latest on how biden he's preparing president joe biden has spent much of the past two weeks traveling abroad, meeting with world leaders in france and italy. >> but back here at home, his debate prep has gotten underway, leading those debate preparations is what former white house chief of staff, ron klain, who led biden's prep back in 2020 and also lead debate prep for hillary clinton when she faced off against trump 20 2016. now, a campaign official says the president won't have as much time to devote to debate prep as he did in that 2020 race. they expect that the most intense sessions of debate preparation will come in the days leading into june 20 seventh. in fact, the president is expected to spend a few days i camp david in the coming weeks, but there have been some debate preparation sessions so far and a source says but in those sessions, the president has really been focused on trying to find ways to hold trump accountable in this debate, some of the areas where he really wants to draw a contrast and criticized trump on related to reproductive rights and also trump's calls for political violence or trying to undermine democratic institutions. the ultimate goal advisers say, is trying to paint trump as chaotic and divisive while presenting biden as a steady and y's are alternative one campaign official said that president biden has been much punchier in his remarks, in his speeches about trump the campaign trail. and they expect that will continue in to this debate. of course, biden and trump have faced off a twice before back in 2020, biden at least understands a little little bit of the style that trump uses on the debate stage. now, in addition to debate preparations, president biden is also focused on raising major cash for his campaign he is here in los angeles where he will be attending a fundraiser with former president barak obama, julia roberts, and george clooney really tried to tap in to some of that star power in this campaign so far, the campaign has not said how much they raised, but a similar event between biden obama and clinton brought in 26 million. so the campaign is hoping to bring in another big hall here in los angeles with this fundraiser as they are trying to keep that cash advantage over donald trump arlette saenz, cnn, los angeles former president donald trump celebrating his 78th birthday with a room full of supporters and west palm beach, florida while he didn't shy away from the bag he was 78. he did manage not to attack joe biden for his age, just a few years older than donald trump, we should be clear that if he were to win donald it would be the oldest person to accept or sworn in as president in history. >> that is something donald trump himself is acutely aware of. but again, why he has continued to avoid the topic of age while exalting joe biden, take a listen. >> we have a president who has no clue what the hell is going on. just look at him yesterday, look at him the day before in europe, peterson know where the hell he is troublesome, talked at length about that debate that's happening in two weeks. we'll be on the stage with joe biden, who did laura that while he was in washington, dc on thursday, he held a quote, unquote, policies session with senior advisers as well as two senators, eric schmitt of missouri and marco rubio of florida, while they are saying this is not debate rap, they really want to stress that this is something that will they acknowledge, help him prepare for the debate of the topics that they talked about. democracy also, how to answer questions about january 6. and the riots on january 6, donald trump involvement in that and his later conversation in remarks about how he would harden those involved in the january attack. >> first-time home cnn, west palm beach, florida so to kill him a major supreme court ruling in the us on friday, rolling back gun regulations, those details just 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