Rep. Don Bacon, Sen. Angus King and H.R. McMaster, who served as Mr. Trump's national security adviser during his first administration, weigh in on the U.S.-Ukraine relationship.

In the aftermath of Friday’s Oval Office debacle, Team Trump apparently expects Volodymyr Zelenskyy to beg for forgiveness — by some accounts, on camera.

Trump, who'd been expected to sign a deal, abruptly sent Zelenskyy packing, saying in a social media post that the Ukrainian president could "come back when he is ready for Peace." Zelenskyy stated on Sunday he was still prepared to sign the agreement.