The US is committed to preventing Iran from obtaining a nuclear weapon and is prepared to use force to that end, but a military strike against the Islamic Republic would be "premature" at this juncture, Gen. Martin Dempsey, the chairman of the US Joint Chiefs of Staff, said in an interview with the National Journal on Thursday. "I do think the path we're on—the economic sanctions and the diplomatic pressure—does seem to me to be having an effect," Dempsey said. "I just think that its premature to be deciding that the economic and diplomatic approach is inadequate."Dempsey, who last week visited Israel for the first time since taking the reins of the US military in October, warned against the consequences of a military strike against Iran."A conflict with Iran would be really destabilizing, and I'm not just talking from the security perspective," he told the National Journal. "It would be economically destabilizing."