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 may hope to use Trump's 50-day window to wear down Ukraine, but quick gains seem unlikely - President Donald Trump’s ultimatum to Russia to accept a peace deal in Ukraine within 50 days or face ...

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

The Pentagon and U.S. military officials in Europe are working with NATO members to ship more Patriot missile systems to ...

Ukrainians have begun to credit First Lady Melania Trump for her husband’s 180 on support for Russia and President Vladimir ...

US President suggested to see how things would go with Putin, adding that so far, he is very disappointed with him ...

President Donald Trump was quickly mocked by political observers on Monday over his highly-teased threat to impose a 100% tariff on Russia if President Vladimir Putin does not agree to a ceasefire ...

President Donald Trump’s new weapons deal and his increasing criticism of Vladimir Putin have sparked fear among some ...

Though endlessly critical of his predecessor, President Trump has adopted a Ukraine strategy similar to that of former ...

President Donald Trump’s nominee for U.S. ambassador to the United Nations will face questioning from lawmakers for the first ...

Mike Waltz has told lawmakers at his confirmation hearing to be U.S. ambassador to the United Nations that he plans to make ...

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