President Donald Trump on Tuesday ruled out sending US troops but envisioned extending US air power as Western nations began hashing out security guarantees for Ukraine before any potential summit with Russia.

Trump, in a flurry of diplomacy aimed at ending the war, brought Ukrainian President Volodymyr Zelensky and top European leaders to the White House on Monday, three days after his landmark encounter with Russia’s Vladimir Putin in Alaska.

Trump said President Putin, whom he called in the middle of Monday’s talks, had agreed to meet Zelensky and to accept some form of Western security guarantees for Ukraine against Russia — promises met with extreme caution by Kyiv and European leaders.

Putin proposed holding the summit with Zelensky in Moscow, three sources familiar with the Trump

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