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.

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

New developments Tuesday reinforced the idea that President Donald Trump has significantly shifted his view of the Ukraine war.

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

Russia’s approach is to ‘keep calm and carry on’ in the face of Trump’s threats over Ukraine war, experts say.

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.

Putin tells Trump Russia will continue Ukraine war until achieving its goals, just two days after the U.S. halts some military aid to Ukraine.

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

President Trump has said he will send Kyiv more weapons and threatened Russia with further sanctions if it does not end the war in Ukraine within 50 days.

President Donald Trump’s ultimatum to Russia to accept a peace deal in Ukraine within 50 days or face bruising sanctions has given the Kremlin extra time to pursue its summer offensive