Russian invasion 'would trigger swift, severe' US response

WASHINGTON (Nexstar) -- The situation between Russia and Ukraine is intensifying. American officials are monitoring events closely as the world fears an imminent attack by Russia on Ukraine.The British government said Russia is plotting to overthrow the government in Ukraine and install pro-Kremlin leaders, something US Secretary of State Antony Blinken said, "We've been warning about just this type of tactic for weeks."More than 120,000 Russian troops are stationed along Ukraine's border.On CNN