Secretary of State John Kerry confirmed on Wednesday that Iran has removed the calandria, or central vessel, of its nuclear reactor at Arak, and it will be filled with concrete within hours. Iranian media reported earlier this week that the Islamic Republic had removed the core of the Arak heavy-water nuclear reactor, the fate of which was one of the sticking points in nuclear negotiations between Iran and the six world powers. "Just yesterday, the foreign minister (of Iran) reported to me that the calandria of the plutonium nuclear reactor is now out and in the next hours it will...