Questions have arisen after Russian President Vladimir Putin said his country tested two nuclear-capable weapons this week.

A top Moscow official says he believes the US, Ukraine and Russia are close to a "diplomatic solution" on the conflict.

A supply of U.S. Tomahawk cruise missiles to Ukraine would help "push Russia back," the foreign minister of NATO ally Estonia told ABC News.

The White House makes a sharp move to pressure Moscow to secure peace in Ukraine just one day after a summit between US ...

President Donald Trump on Thursday vowed to begin testing U.S. nuclear weapons "on an equal basis" with Russia and China, ...

A major finding in Thursday's Marist Pollshows Mamdani with a 16-point lead, overall. Cuomo campaigned with conservative Russian immigrants in Brighton Beach, Brooklyn. Among them was Inna Vernikov, a ...

An Australian cybersecurity expert for a U.S. defense contractor, has pleaded guilty in federal court to selling trade ...

California Gov. Gavin Newsom (D) warned that the 2028 presidential election will be a “[Russian President Vladimir] Putin ...

The Treasury Department said new economic penalties will target Russia's two largest oil companies, Rosneft and Lukoil, as ...

David Muir and Rachel Scott shared a new update on Donald Trump on Thursday night's episode of ABC World News Tonight - and ...

For Chapman, who has lived several lives as a socialite, spy, and media personality, the new appointment seems almost poetic.