"I don't even want to imagine what would happen if Ukraine had to face Russia without U.S. support," Ukraine's president said.

The head of the U.N. atomic watchdog says he will visit Moscow in the coming days to speak with officials about Russia’s ...

Ukraine is using a new type of drone capable of destroying Russian gas pipelines—and unlike kamikaze drones, they can be used ...

Despite more than a year of warnings that critical Ukrainian nuclear energy infrastructure sites are vulnerable to potential ...