Isis threaten to plant bombs at ‘every American embassy'

All 294 US diplomatic outposts are on high alert after the terror threats were posted online by rebels.
 
One ISIS post said: “If America attacks Iraq every American embassy in the world will be exposed and attacked with car bombs.”
 
Another vowed: “If the United States bomb Iraq, every American citizen is a legitimate target.”
 
The terrorists said that companies in Arab countries employing US citizens would also be targeted, after threatening to “slaughter” US doctors around the world. The messages came amid a US government fightback on Twitter against ISIS militants who urged followers to tweet threats.
 
The @ansaar999 account, which appears to have links with the rebel group, tweeted its 23,400 followers, telling them to post anti-US messages in English.
 
The messages, sent to politicians and celebrities including Oprah Winfrey, contained images of dead US soldiers, the 9/11 attacks and masked ISIS fighters.
 
The US joined the war of words on the Think Again Turn Away account, which is used to respond to critics in the Middle East.