A Russian official said Moscow is ready to respond with military measures if the United States deploys its missile defense program to Greenland.

U.S., Russian and Ukrainian negotiators are back around a table for a second round of technical talks, but in Kyiv, Russian bombs bring suffering and skepticism.

Trump's Greenland focus highlights urgent Arctic security needs as Sen. Sullivan reveals new U.S. defenses against Sino-Russian threats in Alaska.

A nuclear treaty first signed in 2010 is expiring this week. If it's not replaced, experts say a global arms race could be in the cards.

Ukrainian President Volodymyr Zelenskyy says Russia launched a major attack on Ukraine with around 450 drones and 70 missiles, knocking out infrastructure and wounding at least 10 people

The Russian Foreign Ministry warned Wednesday that it was ready to take decisive action to stop threats against the country, following the expiration of the New START Treaty on nuclear weapons between it and the U.S.

Russia's gains on the battlefield have forced Natalia to rebury her husband in Kyiv.

Dmitry Medvedev, a senior Kremlin security official, said in remarks released for publication on Monday that the world was getting very dangerous, but