Sen. Chuck Schumer says he will oppose Iran nuclear deal
Sen. Chuck Schumer (D-NY) gestures at a news conference on Amtrak funding on Capitol Hill in Washington on May 21, 2015. REUTERS/Yuri Gripas

Democratic U.S. Senator Chuck Schumer of New York said on Thursday he had decided to oppose the nuclear deal with Iran negotiated by the Obama administration.

"To me, the very real risk that Iran will not moderate and will, instead, use the agreement to pursue its nefarious goals is too great," Schumer said in a statement.

(Reporting by Emily Stephenson; Editing by Eric Beech)