Iran is also the world’s leading state sponsor of terror. It has supplied more than 70,000 rockets to terrorist organizations deployed on Israel’s borders and has tried to murder civilians across five continents and 25 countries, including in the United States. In July, Iranian-backed Hezbollah terrorists killed five Israeli tourists, among them a pregnant woman, in Bulgaria. Iran’s forces have attacked American troops in Afghanistan and Iraq. Its agents are operating in Yemen, Africa and South America. By providing fighters and funds, Iran is enabling Syrian dictator Bashar al-Assad to massacre his own people.Iran has done all this without nuclear weapons. With them, it can commit incalculable atrocities anywhere in the world, beginning with Israel. As the chief of staff of the Iranian military recently stated, “the Iranian nation stands for the full annihilation of Israel.” Last week, Iranian President Mahmoud Ahmadinejad said “the annihilation of the Zionist regime is the key for solving the world problems.”Iran will continue to drag out the negotiations while installing more centrifuges. These, according to the IAEA, are spinning even faster. The sanctions, which have dealt a blow to Iran’s economy, have not affected the nuclear program. Meanwhile, more of Iran’s expanding stockpile will be hidden in fortified bunkers beyond Israel’s reach.No country has a greater stake than Israel in using negotiations and economic pressure to dissuade Iran from developing nuclear weapons. We appreciate the determination of President Obama and the U.S. Congress to advance the sanctions and their pledge to keep all options on the table.At the same time, the president has affirmed Israel’s right “to defend itself, by itself, against any threat,” and “to make its own decision about what is required to meet its security needs.”