Alyssa Fisher writes in Forward,”A secret letter concerning America’s understanding of Israel’s undeclared nuclear arsenal has spanned several presidential administrations, the New Yorker reported Monday. Only a select group of senior American officials, in three previous administrations, knew of the letters, the New Yorker revealed. Israeli leaders interpret the letters as a pledge not to press the Jewish state to give up its nuclear weapons so long as it continued to face existential threats in the region. But American officials say the letters aren’t that explicit and fall short of constituting a binding commitment.” (more…)