Is that ‘credible’ enough to get Obama to respond?

Via Sky News:

Islamic State (IS) has used a new video to warn countries taking part in airstrikes in Syria they will suffer the same fate as France.

“We say to the states that take part in the crusader campaign that, by God, you will have a day God willing, like France’s and by God, as we struck France in the centre of its abode in Paris, then we swear that we will strike America at its centre in Washington,” the video said.

It was not immediately possible to verify the authenticity of the video.

The attacks in Paris on Friday night left 129 people dead and police in France and Belgium are carrying out dozens of raids.

Earlier on Monday French fighter planes carried out their biggest air raid in Syria by dropping 20 bombs on the Islamic State stronghold of Raqqa.

The bombers hit a jihadi recruitment centre, training camp and arms depot run by the extremist group, according to the French defence ministry.

Hackers from the activist group Anonymous have declared “war” on IS after the attacks.

In a video they posted on YouTube, a representative wearing a hood and the group’s distinctive Guy Fawkes mask said the violence “can’t go unpunished”.