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What kind of missiles would be placed in the rest of europe, what exercises, by both nato and russia would look like, the u.s. has said clearly that if they are to give any sort of concessions or make any moves on those fronts they want reciprocal moves by the russians. this is just the first day of meetings in a whole weeks worth of meetings that will expand over the week to include nato and other countries later on this week. >> alex marquardt in jean eva. thank you. let's bring in security analyst david sanger. he's a white house and national security correspondent for "the new york times."...

Big break throughs or huge announcements today. more just sending out paperwork to the congressional budget office to get a better sense if they do certain proposals, what the price and impact estimate might be. julie? >> julie: so another question, is there also a split on the democratic side? >> reporter: some have suggested there may be a split on the democratic side. you've got moderates that are saying let's sit down with the republicans and try to fix what is wrong with obamacare. then you've got a more liberal wing of the democratic party featuring people like elizabeth warren of massac...

Korea, with an eye on what's going on in china. a lot of tension in south korea because of what north korea has been doing with missile tests in the last week. what's going on? >> ali, north korea is a prime concern for president trump and xi jinping as they meet for the first time. in south korea, the issue is seen as crucial. tension is high on the korean peninsula with the regime of kim jong-un on a steady run of tests and provocations over the last two months. the latest just yesterday, firing a ballistic missile into the sea of japan. however, there are not expected to be any big break th...

Space telescope, like james webb will be aiming their telescopes there. and by looking at the light coming from these planets, we'll be able to determine a lot about the kept composition of the atmosphere including whether or not there is the presence of water and other building blocks like oxygen, carbon dioxide and other compounds like that. that will give as youo as to whether or not there could be life there. there won't be a definitive answer until we send a probe there. and that's quite a long ways away. >> let me get my producer to bring up that video of what it could look like. what co...

>> first time meeting in two years since the ukraine conflict. what do you hope to establish in this meeting? >> it's been important to us as we've had substantial tensions with russia to maintain open communication. we can be clear about our differences s differences. we'll be clear we want the implementation of the agreement including support for separatists. we'd like to see that plan follow through. we also have a broader agenda with russia. they're part of p 5 plus one talks. they've been destructive in those discussions. we would like them to play a more constructive role in syria. i don...