Twenty-nine nuclear scientists have signed a letter to US President Barack Obama praising the Iranian nuclear deal, the New York Times reports Saturday night, calling it “innovative” and “stringent.” Signatories include Richard L. Garwin, a longtime Washington advisor on nuclear issues and arms who helped design the first hydrogen bomb; Siegfried S. Hecker, who directed the Los Alamos nuclear testing and development program from 1986-1997; and Rush D. Holt, a physicist and former member of Congress who now leads the American Association for the Advancement of Science. …