President Volodymyr Zelenskiy of Ukraine on Saturday called for the creation of a European army, saying that the continent ...

In November 2017, after a lengthy meeting with Chinese president Xi Jinping, Donald Trump boasted that he and Xi can solve “probably all” the world’s problems. Today, he believes he alone can solve ...

European fears about the U.S. pulling its troops from the continent have been brewing for some time, with the head of the Munich Security Conference, Christoph Heusgen, saying: "The U.S. will likely ...

Researchers have systematically detailed, step by step, how cognitive maps form in the brain's hippocampus -- a region responsible for learning and memory.