Trump-Putin summit: Zelenskyy to travel to DC on Monday to meet with President Trump

Excluded from Friday's summit is Ukrainian President Volodymyr Zelenskyy, who has met in person with President Donald Trump several times this year.

The first was a contentious meeting at the White House in February, where Trump and Vice President JD Vance rebuked Zelenskyy for his handling of the war and falsely blaming the Ukrainian leader for a conflict that began when Russia's Vladimir Putin launched a full-scale invasion. Zelenskyy had been in Washington to sign a mineral resources deal, but that was abruptly canceled following that clash.

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Trump, Vance blast Zelenskyy, call him 'disrespectful' at White HousePresident Donald Trump told Ukrainian President Volodymyr Zelenskyy “you don’t have the cards.”

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Their next meeting was at the Vatican in April ahead of the funeral for Pope Francis. There, they met one-on-one in what appeared to be a more cordial affair. Zelenskyy said it was a "good meeting" and a White House spokesperson called it "very productive."

Ahead of Friday's summit, Trump joined a virtual conference with Zelenskyy and European leaders.

Ahead of Friday's summit, Hillary Clinton made an unexpected declaration.

The former secretary of state said she would nominate President Trump for a Nobel Peace Prize -- something he has long desired and expressed grievance over not having -- if he were able to end Russia's war "without putting Ukraine in a position where it had to concede its territory to the aggressor."

"He is not meeting with a friend. He is meeting with an adversary, and an adversary who wants to see the destruction of the United States and the Western alliance," Clinton said on the podcast "Raging Moderates."

The 2016 Democratic presidential nominee said Trump "could really stand up to Putin to make it clear there must be a ceasefire, there will be no exchange of territory, and that over a period of time, Putin should be actually withdrawing from the territory he seized in order to demonstrate good faith efforts."

"If President Trump were the architect of that, I'd nominate him for a Nobel Peace Prize," Clinton said.

Asked about Clinton's remarks by Fox News, Trump responded, "Well, that was very nice. I may have to start liking her again."

President Donald Trump and Russian President Vladimir Putin sat down for bilateral talks in Anchorage.

They are seated in front of a blue backdrop that read “Pursuing Peace” with their delegations.

Neither leader made remarks as reporters briefly entered the room.

ABC News Senior Political Correspondent Rachel Scott, who is the White House pool reporter for Friday's summit, posed multiple questions to Putin -- including if he would agree to a ceasefire, stop killing civilians and how he could be trusted. Putin did not respond, but acknowledged he heard the questions.

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Who's in the meeting with Trump and Putin at the Alaska summitThe Alaskan summit between President Donald Trump and Russian President Vladimir Putin is a three-on-three meeting, a White House official has confirmed.

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As President Trump and Russia's Vladimir Putin met on the tarmac at Joint Base Elmendorf-Richardson, a B-2 bomber and four F-35 fighter jets flew overhead, defense officials confirmed to ABC News.

On the tarmac, a red carpet was laid out with F-22 fighter jets on either side. The F-22 Raptors, known for their ability to fly undetected and air-to-air combat, operate out of the air base, officials said.

It was not immediately clear whether Trump personally ordered the bombers and the flyover to the Air Force base as a kind of show of force ahead of his discussions with Russia, which also is a nuclear power. B-2 Spirit bombers have operated out of the base before.

In recent weeks, Trump has repeatedly praised the power of the aircraft and the skill of its pilots, noting that the seven B-2s used in Operation Midnight Hammer flew 36 hours straight from Whiteman Air Force Base in Missouri to Iran where they dropped more than a dozen bunker-buster bombs.

-ABC News' Anne Flaherty