Assistant Deputy Secretary of State Brett McGurk said suicide bombings in Iraq have tripled over the past year, and that the Islamic State of Iraq and the Sham is using a “global network” of jihadists to supply the bombers, who are often foreigners; he also accused Iraq of not doing enough to stop Iran from sending military equipment to the Assad regime in Syria. McGurk said US advisers have been assisting the Iraqi army in the fight against ISIS in Fallujah. Secretary of State Kerry cautioned that French business executives visiting Tehran risk possible Iran sanctions. The Homeland Security Department warned that toothpaste tubes filled with explosives could be smuggled into Russia on direct flights and used to assemble a bomb either aboard the airplane or at the Sochi Olympics.