US Secretary of State Antony Blinken warned Friday that any Russian invasion of Ukraine would be "met with a severe and a united response."

Blinken held a 90-minute bilateral meeting Friday in Geneva with Russian Foreign Minister Sergey Lavrov, the latest round of diplomatic talks that the US secretary said provided a "clearer path of understanding each other's concerns."

President Joe Biden said Wednesday that he believed Russian President Vladimir Putin would invade Ukraine.

It will be met with swift, severe and a united response from the United States and our partners and allies," Blinken said.

Lavrov insisted Friday that Russia was not planning to attack.

The Defense Department is working on a series of military options for Biden's approval that could be activated to beef up the US military presence in Eastern Europe as a deterrence if Russia invades Ukraine, according to two defense officials.