'We are prepared to work round the clock in order to reach an agreement,' Zarif says after day of nuclear talks, rejects Netanyahu's 'fear-mongering'.

VIDEO: At Institute for National Security Studies (INSS) annual conference former Clinton envoy and former head of India's spy services talk Iran, Netanyahu's speech and regional security.

Netanyahu slams US-led nuclear negotiations with Tehran, a week before a scheduled address to Congress in Washington.

Obama administration clarifies comments after national security adviser criticizes Netanyahu's scheduled address to Congress on Iran.

While the work on the Arrow has been marred by failed tests and delays, the David's Sling project has in the past year seen progress in its development.

US military officials have previously raised concerns about Iran's development of longer-range missiles that could reach Israel and potentially Europe.

Roi and his family came to Israel eight years ago, fleeing dangerous situation in Colombia; now he faces being separated from his four-year-old son, due to bureaucratic misstep.

US officials say secretary of state will reassure states that deal with Tehran will not allow Iran to get the bomb, won't mean American complacency on broader security matters.