Russia says US support for terrorist groups in Syria has now fully been exposed.

The US believes a Russian nuclear strike is unlikely despite President Vladimir Putin’s warnings about US approval for Ukraine to launch missile strikes deep inside Russia, according to a report.

Moscow has vowed to respond to new strikes by Ukraine against the Russian territory.

Russia’s deputy foreign minister says the treaty on a comprehensive strategic partnership with Iran will include cooperation in the defense and security sectors.

Russian President Vladimir Putin vows more combat test-firing of an experimental hypersonic missile fired at Ukraine on Thursday.

Kiev says Russia launched an intercontinental ballistic missile in Moscow's first "ICBM" attack against Ukraine.

Russia has lowered the nation's nuclear weapons threshold after the United States gave Ukraine the green light recently to use Western-supplied long-range missiles.