Donald Trump held a lengthy phone call with Ukrainian President Volodymyr Zelenskiy and subsequently spoke to NATO leaders after the U.S. president's Friday summit in Alaska with Russian President Vladimir Putin,

The fallout from Donald Trump’s summit in Alaska with Russian President Vladimir Putin last week continues to grow. On Friday, Trump flew to an apparently impromptu meeting with Putin, shaming America by greeting like an honored guest the man who’d ignited the largest war in Europe since Hitler.

President Trump said Monday that he would call Russian President Vladimir Putin following his White House meeting with Ukrainian President Volodymyr Zelenskyy. CBS News senior national security correspondent Charlie D'Agata has more.

Trump’s friendly meeting with Putin, which took place in Alaska on Friday, was a setback for Ukraine and its European allies. But Kyiv was left with one glimmer of hope: a U.S. proposal to create security guarantees for Ukraine,