Deadly Spark: What can trigger US-Iran war?

Tension between the U.S. and Iran is being ratcheted up on what seems like a daily basis. The U.S. Secretary of State Hilary Clinton added fuel to the fire calling Tehran's recent threats to close a vital oil transit route in the Gulf a provocation. RT's Gayane Chichyakyan looks at whether words could soon become action. RT on Twitter http://twitter.com/RT_com RT on Facebook http://www.faceb ...