Trump said on Air Force One that he might consider U.S. security guarantees for Ukraine, outside of the NATO alliance.
The Kremlin estimated the Trump-Putin meeting could last as long as 6 or 7 hours, state media reported.
Trump spoke by phone with Belarusian President Alexander Lukashenko, a key Putin ally.
The Russian president teased the possibility of a nuclear arms control deal.
WASHINGTON − President Donald Trump and Russian leader Vladimir Putin greeted each other warmly on the red carpet after exiting their planes in Alaska for a summit that Trump hopes will lead to a resolution of the three-year Ukraine war .
The two men walked toward each other and shook hands. They exchanged words and Trump saluted assembled U.S. troops.
Reporters shouted, "Mr. Putin, did you underes