Iran is moving to a more aggressive military posture, with its army saying the country’s doctrine is shifting from defence to offence and could include pre-emptive strikes against perceived threats. The warning comes as US President Donald Trump steps up pressure on Tehran, threatening unprecedented sanctions and suggesting that Washington retains broad military options in the region.

Analysis: US President Donald Trump is struggling to extract the United States from a war that he started almost six months ago - alternating between claims that Tehran is…

Six months into its war with the United States, Iran's military has begun signalling a shift from retaliation to offence, which analysts say could reflect Tehran's belief it holds…