Atlantic Council senior fellow Ariel Cohen and Heritage Foundation senior fellow Charles 'Cully' Stimson discuss the state of the war amid White House tensions with President Zelenskyy.

He wanted to overthrow the pro-Western government and return Ukraine to Russia's sphere of influence. Putin failed, but more than three years on a fifth of Ukrainian territory is in Russian hands, and the US - until recently Ukraine's strongest ally - has paused aid under President Donald Trump and blamed Ukraine for starting the war.

Frontrunners include Chrystia Freeland and Mark Carney, who are making the case they can guide Canada through domestic and international issues. At the top of the list: mounting trade tensions with the United States.

Carney, 59, a political novice, will take over at a tumultuous time in Canada, which is in the midst of a trade war with the United States.