WASHINGTON — President Donald Trump on Tuesday injected some uncertainty over whether the U.S. would abide by the mutual defense guarantees outlined in the NATO treaty as he headed to its summit — ...

I guarantee you’ll find this article eye-opening. Actually, that’s rather hollow as far as guarantees go. There’s no clear definition of what constitutes “eye-opening,” nor is there specificity around ...

Ukrainian President Volodymyr Zelenskyy said the United States is offering his country security guarantees for 15 years as ...

Russia seems unlikely to agree to Western troops in Ukraine as part of any deal to end the war. By Steven Erlanger Reporting from Berlin President Trump has pleased Ukrainian and European leaders by ...