President Donald Trump’s face-to-face high-stakes summit with President Vladimir Putin could determine the fate of European security as well as the trajectory of the war in Ukraine.

Trump has a chance to prove he's a master dealmaker and a global peacemaker.

Putin could cement Russia’s gains and block Kyiv’s bid to join the NATO military alliance in ways that could pull Ukraine back into Moscow’s orbit. President Volodymyr Zelenskyy's exclusion is raising fears of a deal Ukraine does not want.

En route to Alaska, Trump already ruled out U.S. security guarantees “in the form of NATO.”