Russia

A senior U.S. diplomat is holding talks in Moscow on security issues including arms control and the situation in Afghanistan.

Relations between NATO and Russia have been increasingly strained since Moscow annexed Ukraine's Crimean Peninsula in 2014.

A prospective Russian hypersonic missile has been successfully test-fired from a nuclear submarine for the first time.

The four countries are working together to ensure that the Taliban keeps its promise of a moderate form of Islamic rule.

America's relationship with Russia has been precarious.

The search for the Titanic was a cover for a top secret Navy mission involving the use of undersea systems to explore two...

The top U.S. military officer met with his Russian counterpart Wednesday.

The call for witnesses included an emotional video featuring the parents of one of the victims.

The Kremlin has made military modernization a top priority as relations with the West have plunged to post-Cold War lows.

President Volodymyr Zelenskiy vowed to "do everything possible to return Crimea, so that Crimea, together with Ukraine...