Russia has launched a new submarine able to carry Moscow's nuclear-capable Poseidon torpedoes, a new type of weapon touted as able to produce "radioactive tsunamis."

Russia said on Tuesday that its forces were tightening their encirclement of Ukrainian troops in the city of Pokrovsk, a transport and logistics hub they have been trying to capture for over a year. With fighting raging in the streets of the ruined city,

At a secret location in rural Ukraine, columns of attack drones are assembled at night and in near silence to strike deep inside Russia.

Ukraine launched another major drone attack on Russia’s Saratov Oil Refinery, striking the Rosneft-owned facility for at least the third time this fall and igniting a fire in its refining units.

The White House says any upcoming nuclear tests will not involve live detonations or mushroom clouds, following President Trump’s call to restart testing after decades.

President Trump and one of his top cabinet officials are sending mixed messages on how the U.S. government is handling one of the most destructive weapons in the world.