The bombing attack in Tehran which killed Iranian nuclear scientist Mostafa Ahmadi-Roshan last Wednesday, Jan. 11, generated an angry phone call from US President Barack Obama to Israeli Prime Minister Benjamin Netanyahu the next day, DEBKAfile's Washington and intelligence sources report. Washington is increasingly concerned, the Wall Street Journal reported Saturday, that Israel is preparing to strike Iran's nuclear sites over US objections and has bolstered the defenses of US facilities in the region in case of a conflict. Obama, Defense and Secretary Leon Panetta and Secretary of State Hillary Clinton have been sending private messages to their Israel contacts...