BALDWIN: A mission to calm some of the nerves of jittery U.S. allies in Europe. That is what top White House officials are doing right now. You have the defense secretary, James Mattis, in Munich for a security conference. Vice President Mike Pence just left Joint Base Andrews this morning and is expected to land in Munich within the hour. And you have the secretary of state, Rex Tillerson, also in Europe, meeting with world leaders at the G-20. So, CNN international diplomatic editor Nic Robertson is with us there live in Munich. And, Nic, I do really want to get to how these world leaders are reacting to that massive press conference of the president's from yesterday. But first to the news today. You know, President Trump has been - and also when he was a candidate - quite critical on NATO, saying not all the countries are paying their fair share. With Vice President Pence arriving, what do they want to hear from him? What assurances are these leaders looking for?</s>NIC ROBERTSON, CNN INTERNATIONAL DIPLOMATIC EDITOR: They want to know that the transatlantic alliance, that NATO and also the close economic and - ties between Europe and the United States still exist. They want to know that President Trump isn't going to strike some kind of deal over their heads with President Putin in Russia. But take Angela Merkel, the German chancellor here. She'll be speaking at the same time as Vice President Mike Pence will be speaking. They will have a conversation together.
Top Officials on Reassure Europe Mission.