Russian President Vladimir Putin agreed to mediate a new nuclear agreement between the United States and Iran after reportedly being asked to by U.S. President Donald Trump in a phone call in February ...

The United Nations Security Council will meet this week to discuss Tehran's nuclear development as Iran, Russia and China meet in Beijing for high-level talks.

US President Donald Trump "will not manage to change Tehran’s policy on Washington through threats," Roohollah Mudabbir said ...

This is an important meeting that is coming as Iran increasingly seeks to ingratiate itself with China and Russia.

A widely-used online Ukrainian battlefield map appeared to show Ukrainian forces no longer in control of the town of Sudzha ...

Russia’s fleet of Tu-214Rs is very small—and shows no sign of increasing. But the bird’s advanced electronics and optical systems offer unique advantages to the Russian military.

Russia "would be in favor of resuming the format which developed the original deal endorsed by the Security Council and Iran, ...

The US federal government rests in the hands of Republicans holding majorities in both chambers of Congress and led by ...

The Trump administration stopped its freeze on military aid to Ukraine.

By the time Kennan became charge d’affaires in Moscow in early 1946, the war-time alliance was fraying and Western relations ...

National Security Correspondent Bill Gertz reports that the warship activities will include simulated attacks on maritime ...