Sweeping tariffs set to be imposed by President Donald Trump next month may overshadow his top diplomat’s first official trip ...

President Trump said late Wednesday that he was tapping Transportation Secretary Sean Duffy to lead NASA on an interim basis ...

The Ukrainian ambassador to the U.S. will depart as President Volodymyr Zelensky looks to reshape relationships in Washington amid the war with Russia. Oksana Markarova is out as the leading U.S.