Amid mounting criticism, Israeli Prime Minister Benjamin Netanyahu defended his upcoming visit to the U.S. just weeks before Israelis go to the polls to decide whether to give him another term. On March 3, the Israeli leader is set to address the U.S. Congress, speaking on behalf of his State to make the case against negotiating an Iranian nuclear deal. On Sunday, he said "As prime minister of Israel, I am obligated to make every effort to prevent Iran from getting nuclear weaponry that will be aimed at the State of Israel. This effort is global and I will go anywhere I am invited to make the State of Israel's case and defend its future and existence." But the way in which he was invited -- and the timing of his visit -- has only highlighted difficulties in relations between Netanyahu and President Obama's administration.