MICHAEL KIMMAGE is Professor of History at the Catholic University of America. He is the author of Collisions: The Origins of the War in Ukraine and the New Global Instability.

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.

Russia bombed Ukrainian cities in open defiance of Trump's ceasefire ultimatum, casting doubt on his leverage with Putin.

President Donald Trump seems to have learned the lesson painfully gleaned by all his 21st-century predecessors: You can’t reset US relations with Vladimir Putin.

Melania Trump has highlighted Russia's continued attacks on Ukraine in private conversations, President Trump said on Monday.

Keir Starmer, the British prime minister, and Emmanuel Macron, the president of France, are expected to promise today to have their nuclear arsenals work together if Europe is threatened. Private equity firms have entered the $40 billion youth sports industry. Their investments could raise costs for families.

Exiled Russian journalists Andrei Soldatov and Irina Borogan tell Newsweek about Vladimir Putin's crackdown and their book "Our Dear Friends In Moscow."

President Donald Trump has credited First Lady Melania Trump for influencing his tougher stance on the Russia-Ukraine conflict.

Donald Trump just can’t quit Vladimir Putin, with the U.S. president declaring that he’s “not done with him” despite his disappointment in the Russian leader. The relationship between the pair has become increasingly strained over Putin’s refusal to end the war.