Obama launches sales job on Iran nuclear deal

* Obama says deal cuts off "Iran's most likely paths to a bomb" * Republican senators pour scorn on agreement * President to call Israeli PM, U.S. official says (Adds Obama plans to talk to Netanyahu) By Steve Holland and Patricia Zengerle WASHINGTON, Nov 23 (Reuters) - U.S. President Barack Obama said on Saturday a deal between Iran and world powers was a big step toward a comprehensive ...