BERMAN: Secretary of State Rex Tillerson denouncing Russian aggression in Ukraine, and it comes a day after revealing that the U.S. no longer wants to oust Syria's leader. CNN global affairs correspondent Elise Labott traveling with Secretary Tillerson live in Brussels. Good morning, Elise.</s>ELISE LABOTT, CNN FOREIGN AFFAIRS CORRESPONDENT: Good morning, John. Well, you know, when you heard President Trump during the campaign and even when he was elected talk about a warming towards Russia, talking about NATO being obsolete, you would have thought that his top diplomat would have come here reinforcing that message. But for the first time, Secretary of State Rex Tillerson arrived here talking about the need to give NATO the resources it needs, working together and talking about countering Russian aggression in Ukraine and eastern Europe, which the ministers are going to speak about during their day today. And then, you know, Secretary Tillerson came from Turkey yesterday which his comments really took a significant break with the Obama administration. You know, they insisted that President Assad must go, but you heard Secretary Tillerson say yesterday that Assad's future will be determined by the Syrian people. You heard the U.S. ambassador to the U.N., Nikki Haley, doubling down on that, saying that Assad is not the priority, getting rid of him, ISIS is. And it's pretty clear that the Trump administration now wanting to focus on ISIS, putting the Assad question aside right now, even though that doesn't really square with a lot of its allies. I'm sure they'll hear a lot about that today -- Alisyn.</s>CAMEROTA: Yes, Elise, very fascinating to hear the new thinking on Assad. Thank you very much for all of your reporting from the ground there. Up next, what leads someone to join ISIS? CNN's Clarissa Ward profiles a young man willing to kill and die for ISIS. She joins us to talk about it next.
Tillerson Denounces Russian Aggression in Ukraine