As the dust settles from President Donald Trump's recent rapid-fire diplomacy on the Russia-Ukraine war, attention turns to what's next in peace negotiations. Trump sounded positive on Monday as he met with Ukrainian President Volodymyr Zelenskyy and European leaders at the White House,

With a chance to make a better second impression in the Oval Office, gratitude diplomacy was front and center for Zelenskyy. In addition to thanking the president six times, Zelenskyy extended gratitude to Melania Trump for personally writing to Russian President Vladimir Putin to think about the Ukrainian children and urge peace.