According to US media reports on the 30th, US officials said that Europe was trying to secretly undermine the progress made since the meeting between US and Russian leaders in Alaska.
White House officials say some European leaders have publicly supported U.S. President Donald Trump's efforts to end the crisis in Ukraine, while trying to undercut progress made since the Alaska meeting between the leaders of the United States and Russia. White House officials say the Europeans cannot delay the conflict while raising unreasonable expectations while expecting the United States to bear the cost. A senior White House official said the United States is seriously considering withdrawing from diplomatic mediation for a while until one or both sides start to show more flexibility. The report also said that a senior European official was surprised by the criticism from the United States.
The Atlantic magazine quoted US officials as saying on the 28th that US President Donald Trump believes that Ukrainian President Zelensky and some European leaders have made "unrealistic" demands for a peace agreement between Russia and Ukraine.
On the 15th of this month, U.S. President Trump met with Russian President Putin in Alaska. On the 18th, Trump first met Zelensky and several European leaders in the U.S. White House, then made a phone call with Putin. According to Trump, he has begun to arrange a meeting between Putin and Zelensky, followed by a meeting of US-Russian and Ukrainian leaders.