Iran vows retaliation after Trump's 'bomb Iran back to the Stone Ages' threat, escalating Middle East conflict.

Iran on Thursday threatened "crushing" attacks on the US and Israel, firing missiles at Tel Aviv after US President Donald Trump vowed to bomb the Islamic republic "back to the Stone Ages". The war, which erupted more than a month ago with US-Israeli strikes on Iran, has spread throughout the Middle East and roiled the global economy, impacting hundreds of millions worldwide. FRANCE 24's Reza Sayah reports from Tehran, Iran.