On Saturday Prime Minister Vladimir Putin received authorization from the Russian parliament to invade Ukraine. The following day, Russia sent 6,000 air and ground troops into the Crimean region of Ukraine, taking "operational control" of the peninsula. The United States' reaction to the invasion has been one of outrage, but no substantial action. In an interview on Face the Nation Secretary of State John Kerry said that, "you just don't, in the 21st century, behave in 19th century fashion by invading another country on completely trumped up pretext." Many wonder if this new tension means a further continuation of a new Cold War.