After charm offensives failed to get US backstop guarantees, can Starmer unite a fractured group of European leaders on Ukraine?

Ukrainian President Volodymyr Zelenskyy met with British Prime Minister Keir Starmer one day after a meeting with President Donald Trump that ended with questions about Ukraine-U.S. relations. NBC News' Megan Fitzgerald reports on how Europe may need to step up and defend Ukraine against another Russia invasion without the aid of the U.