Russia has warned of a direct military confrontation with the US over its support to Ukraine, even as the former Soviet republic is set to become part of the European Union.

The Russian ambassador to the United States has condemned new Western sanctions against Russia over recent developments in Ukraine, warning that they will be to the detriment of the United States and the West but will not force Moscow to change its foreign policy.

One of the main threats to Russia’s national security is NATO’s eastward expansion that shortens the flight time to cities in the country's European part, its ambassador to the US says.

Last week’s deadly unrest in Kazakhstan has led to heightened tensions between traditional rivals, Washington and Moscow, while laying bare former’s nefarious project to destabilize the region.

Kazakhstan has erupted in protest after a hike in fuel prices spiraled into violent clashes between protesters and security forces; the President blames foreign elements.

The Russian ambassador to the United States has left Moscow to return to Washington, expressing optimism about building "equal and pragmatic" ties after the US-Russia summit in Geneva.

Russian Ambassador to the United States is back in Moscow for “consultations” on the state of Washington-Moscow relations.

Russia will take reciprocal measures to US deployment of missiles in the Asia-Pacific region, the Russian ambassador says.

Moscow postpones talks with Washington on strategic stability set for later this month, after a US delegation refused to attend a Geneva meeting on cybersecurity earlier in the week.

Moscow’s new ambassador to Washington has called for re-establishing regular Russian and American military and security contacts.