President Trump jabs at the Russian leader with threats; Vladimir Putin responds with flattery. But there are notable signals ...

President-elect Donald J. Trump has made big promises on Ukraine, Iran, China and crises around the globe. But he will have to make difficult choices. By David E. Sanger David E. Sanger has ...

David E. Sanger is a national security correspondent and senior writer for the New York Times, a contributor to CNN and an adjunct lecturer at the Kennedy School of Government. In a 38-year ...