This week’s     introduction by a bipartisan group of 26 senators of a new     sanctions bill against Iran could result in the biggest test of     the political clout of the Israel lobby here in decades.
The White     House, which says the bill could well derail ongoing     negotiations between Iran and the U.S. and five other powers     over Tehran’s nuclear programme and destroy the international     coalition behind the existing sanctions regime, has already     warned that it will veto the bill if it passes Congress in its     present form.
The new     bill, co-sponsored by two of Congress’s biggest beneficiaries of     campaign contributions by political action committees closely     linked to the powerful American Israel Public Affairs Committee     (AIPAC), would impose sweeping new sanctions against Tehran if     it fails either to comply with the interim deal it struck last     month in Geneva with the P5+1 (U.S., Britain, France, Russia,     China plus Germany) or reach a comprehensive accord with the     great powers within one year.
To be     acceptable, however, such an accord, according to the bill,     would require Iran to effectively dismantle virtually its entire     nuclear programme, including any enrichment of uranium on its     own soil, as demanded by Israeli Prime Minister Benjamin     Netanyahu.
The     government of President Hassan Rouhani has warned repeatedly     that such a demand is a deal-breaker, and even Secretary of     State John Kerry has said that a zero-enrichment position is a     non-starter.