Video emerges appearing to show Iranian forces firing at protesters

A video has emerged appearing to show Iranian forces firing at protesters in the country, during the latest uprising.Donald Trump has now threatened Tehran with war amid a violent crackdown on nationwide protests.The demonstrations began on Sunday after the Iranian Rial fell to its lowest level at a time when prices of good in the country are skyrocketing.Anti-regime protests that began in the capital have since spread to more than 20 cities.In response, the dictatorial authorities have harshly cracked down on the country of more than 90million people.This crackdown drew the ire of Trump, who earlier said in a post to social media in response to Iran's actions: 'We are locked and loaded and ready to go'.