Trump 'can't hand Ukraine on a platter' to Putin, says former top advisor

Fiona Hill advised US President Donald Trump on Russia during his first term and is now a senior fellow at the Brookings Institution. She's also one of the few people to have been in a room with Trump and his Russian counterpart, Vladimir Putin. She's watched their dynamics up close. As the high-stakes Alaska summit approaches, she shares concerns and predictions with The World's Host Marco Werman.