There have been anti-government protests in Iran, but how strong is opposition inside the country?Read more
Reality Check team
Tehran is getting inconsistent messages from Washington, says Douglas Silliman
Why recent events have prompted hundreds of thousands of Iranians to take to the streets.
Speaking to BBC Breakfast, Boris Johnson has said he doesn't want "a military conflict" in the region.
Al Asad was targeted after Iranian military commander Qasem Soleimani was killed in a US air strike.