After meeting with Zelenskyy during the UN General Assembly, "Trump has moved so dramatically from being what felt, for a very long time, like he was in Vladimir Putin's corner to being very much in Ukraine's corner," Leslie Vinjamuri says.
"It's not that every president is a huge fan of the United Nations or multilateralism, internationalism. But this seems to take it to another level," Craig Kafura says.
"There are not a lot of things that Trump holds dear as sort of core principles [aside from] the tariffs, a real disdain for US allies, and a respect for strength," Craig Kafura says.
"Donald Trump, at some level, approaches this visit from a position of great strength," Leslie Vinjamuri tells BBC News. "For the prime minister, it's a very different story."