Barack Obama recently dismissed ISIS as ‘a bunch of killers with good social media’ – and appears to have prompted a sickening response from the terror group which mocks US soldiers' suicide rates.

A new video released by the Islamists also claims the Prophet predicted 'Islam's enemies' would be destroyed by 'the flames of war' when the number of banners opposed to them - a reference to the international coalition - reached 80.

Currently, 60 nations officially oppose ISIS.

The video taunts America, urging the nation to ‘bring it on’ before adding ‘your numbers only increase us in faith’.

A new Isis video taunts America, urging the nation to ‘bring it on’ before adding 'your numbers only increase us in faith'

Isis calls the nations ranged against it a 'coalition of devils' in its latest propaganda video

In a desperate move, the Isis video highlights the suicide rate among US soldiers

In a desperate effort to worry the world's sole superpower, the video points out that 6,500 US soldiers commit suicide every year and claims that its territory is bigger than the UK.

The Hollywood-style voiceover goes on to say that ISIS is ‘counting your banners’, a reference to the flags of the nations ranged against it in the international coalition it calls a ‘coalition of devils’.

It says: ‘Our prophet said [they] would reach 80 in number and then the flames of war will finally burn you on the hills of death.

‘Gather your allies. Plot against us and show us no respite. Our ally is the greatest. He is Allah and all glory goes to him.’

The video claims that the territory it commands is bigger than the UK

The video boasts that Isis ‘sows fear’ into the hearts of US soldiers and says that America is ‘too weak’ to put boots on the ground.

It concludes that ‘our ally is the greatest, he is Allah and all glory goes to him’.

While the video, which features slickly edited pictures and infographic, makes bold claims about Isis’s strength, the reality is that the group is suffering heavy losses on the ground, especially since Russia began bombing the group.

Russian warplanes have destroyed hundreds of oil-carrying trucks belonging to the group and hundreds of fighters in strikes lasting several days.