US President Donald Trump, who is paying an official visit to Turkiye ahead of the 36th NATO summit, arrives at Ankara Airport in Ankara, Turkiye, on July 7. [Photo/Agencies]

US President Donald Trump renewed his push for the United States to acquire Greenland on Tuesday, reviving a long-running dispute with European allies. He also criticized fellow NATO members over their response to recent US military actions in Iran.

Upon arriving at the NATO summit in Ankara, Turkey, Trump said he was "very disappointed" with NATO allies, accusing the alliance of failing to support Washington following the US military operation against Iran.

Trump also criticized Europe's immigration and energy policies, adding to tensions with some NATO allies.

"I was very disappointed with NATO. We weren't treated well because we did something in Iran. We don't need anybody's help, but before I asked they said they wouldn't be there," Trump told reporters.