The Washington Post reports Secretary of State John F. Kerry on Tuesday defended the Iran nuclear agreement as a “strong deal” before skeptical members of Congress who expressed concern that it will eventually give Iran the freedom to build nuclear weapons and finance mayhem in the region. Appearing before the House Foreign Affairs Committee, Kerry told lawmakers that it is a “fantasy” to think that sanctions can prevent Iran from building nuclear weapons should it choose to do is. “You can’t bomb away that knowledge any more than you can sanction it away,” he said. Kerry testified with Energy Secretary Ernest Moniz and Treasury Secretary Jack Lew in their second round of explaining the Iran deal to lawmakers on Capitol Hill. Last week, the three went before the Senate Foreign Relations Committee for an acrimonious hearing in which they were accused of having been “fleeced” and bamboozled” during months of negotiations with the Iranians.