But his frustration with Putin has grown. Last week, the president said the United States was taking “a lot of bullshit” from Putin. Today, he authorized a significant shipment of U.S. defensive weapons to Ukraine via NATO and threatened Russia with new tariffs if the war does not end in 50 days.

Trump continued to express his frustration at Russian president Vladimir Putin on Sunday, saying he was “very disappointed”

“Putin will not negotiate as a loser,” one of his longtime associates tells TIME by phone from Moscow. “He knows that winners don’t get punished, and if he wins, all of this” — the sanctions, the tariffs — “will go away.”

Leaders expected to decry US President Trump’s trade tariffs while presenting the bloc as a defender of multilateralism.

President has become increasingly frustrated with Russian leader as efforts to broker Ukraine ceasefire have faltered