Russia planning to use nukes? Why CIA chief made 'emergency' visit to Moscow

The Director of the CIA, William Burns, made an 'emergency' visit to Moscow last week, a trip that has raised questions about the state of relations between the United States and Russia, and the potential for escalation in the ongoing conflict in Ukraine. Burns' visit, which was not publicly announced in advance, is seen by some analysts as a sign of serious concerns within the US intelligence community regarding Russia's intentions, particularly in light of recent rhetoric from Moscow about the potential use of nuclear weapons.