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

Trump was active on social media on Sunday morning, suggesting that there is "big progress" being made regarding Russia without providing details.

His post follows his summit in Alaska on Friday with Russian President Vladimir Putin and precedes his upcoming meeting with Ukrainian President Volodymyr Zelenskyy and European leaders on Monday.

"BIG PROGRESS ON RUSSIA. STAY TUNED!" Trump wrote on social media.

He also expressed disagreement with the media's portrayal of potential land swaps. Trump claimed that the media would continue to criticize him, even if he achieved a diplomatic victory.

"If I got Russia to give up Moscow as part of the Deal, the Fake News, and their PARTNER, the Radical Left Democrats, would say I made a terrible mistake and a very bad deal. That’s why they are the FAKE NEWS! Also, they should talk about the 6 WARS, etc., I JUST STOPPED!!!" he wrote.

-ABC News’ Kelsey Walsh

President Donald Trump invited European leaders to join his meeting with Ukrainian President Volodymyr Zelenskyy on Monday afternoon at the White House, a White House official said.

The meeting comes after Trump's summit with Russian President Vladimir Putin in Alaska on Friday.

-ABC News' Hannah Demissie

After meeting with President Donald Trump in Alaska, Russian President Vladimir Putin told Kremlin officials the summit was "timely and very useful," saying the two talked about "all aspects of our cooperation" along with a "possible resolution of the Ukrainian crisis on a fair basis."

Regarding the Russia-Ukraine war, Putin said he and Trump talked about the "genesis and the causes of this crisis," saying "it is the elimination of these root causes that should be the basis for a settlement."

"The conversation was very frank and informative, and I believe that it brings us closer to the necessary solutions," Putin said.

Putin added that he respects "the position of the American administration, which sees the need to end the hostilities as soon as possible."

-ABC News' Somayeh Malekian

After National Public Radio released a report saying papers about the Alaska summit were found on a hotel printer ahead of the meeting between President Donald Trump and Russian President Vladimir Putin, the White House released a statement, calling the report “hilarious.”

“It’s hilarious that NPR is publishing a multi-page lunch menu and calling it a ‘security breach.’ This type of self-proclaimed ‘investigative journalism’ is why no one takes them seriously and they are no longer taxpayer-funded thanks to President Trump,” White House spokeswoman Anna Kelly said in a statement.

NPR had reported the eight pages – that appear to have been produced by U.S. staff – were left behind accidentally and contained precise locations and meeting times of the summit and phone numbers of U.S. government employees.

-ABC News’ Benjamin Siu and Hannah Demissie