Pentagon reveal how dozens of smart bombs have blitzed ISIS in Syria and tell terror group more missiles are on their way

This is only the beginning': Pentagon reveal how dozens of smart bombs have blitzed ISIS in Syria and tell terror group more missiles are on their way 

·        Fanatics' de facto capital Raqqa hit by wave after wave of missiles and bombs during the first U.S. airstrikes in Syria

·        Group of fighter jets from the Royal Bahrain Air Force also took part in coordinated attacks on Islamic State targets

·        20 militants reported dead already, with images released by U.S. military showing huge damage to ISIS-held locations

·        Saudi Arabia, UAE and Jordan also 'participated' in the strikes - though their exact involvement is not yet known 

·        Strikes saw first combat for $139 million F-22 fighter jets - with Tomahawk missiles also launched from Naval vessels

·        U.S. also carried out separate strikes on Al Qaeda group Khorasan - who were planning 'imminent attack' on the West

·        Syrian President Bashar al-Assad was warned in advance about strikes, but is not thought to have had any input 

The U.S. and Arab strikes on militant targets in Syria overnight were 'only the beginning' of a 'credible and sustainable, persistent' coalition effort to degrade and ultimately destroy ISIS militants and other extremist groups, the American military has said.

The airstrikes - which employed U.S. Tomahawk missiles, B1 bombers, F16, F18 and F22 strike fighters and drones - was backed by support from Saudi Arabia, Bahrain, Qatar, Jordan and the UAE - a coalition of nations that has agreed to assist with the destruction of ISIS.

There was also a separate U.S. attack on a different band of Islamist militants in Syria - the mysterious Al Qaeda-affiliated Khorasan Group, who are said to have been planning an 'imminent attack' on a Western target.

'I can tell you that last night's strikes were only the beginning,' Rear Admiral John Kirby, a Pentagon spokesman, told reporters. He said the strikes had been 'very successful' and would continue, without going into further detail on future operational plans.

Another military spokesman, Lieutenant General William Mayville Jr., said that Arab nations - including Saudi Arabia, Jordan, Bahrain and the United Arab Emirates - took part in the second and third waves of attacks. He said the Arab countries' actions ranged from combat air patrols to strikes on targets.

Earlier U.S. President Barack Obama said the participation of the five Arab nations 'makes it clear to the world this is not America's fight alone.'

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Pinpoint: An ISIS vehicle storage area near Abu Kamel in Syria is destroyed by satellite guided munitions in the this video released by the Pentagon

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Reduced to rubble: The remains of the vehicle storage area are scene in this image after the smoke has cleared 

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Levelled: A storage facility near Abu Kamel in Syria was also destroyed in the first round of U.S. strikes

New video: US airstrikes destroy ISIL targets in Syria