A new Islamic State (Isis) video released by the terrorist group on Monday shows its fighters threatening to carry out attacks in Washington and all the countries, who, like France, conducted airstrikes on its strongholds in Syria.

The over 11-minute video released on social media contains footage taken from the aftermath of the Paris shootings that left more than 130 people dead. It also features the statement from  French President Francois Hollande, in which he vows a "merciless" response to the Isis massacre. 

An Isis fighter, who is identified in the video as Al Ghareeb the Algerian, then addresses the countries involved in what he calls the "crusader campaign" and says that Isis will attack Washington.

"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 Isis fighter says.

The video is believed to have been shot in the Isis-held region of Salahuddin, located north of Iraqi's capital, Baghdad.

Following the Paris attacks, US president Barack Obama has promised to "redouble efforts" to fight Isis.

Meanwhile, France in retaliation continued to bomb Raqqa, the Isis-stronghold in Syria, for the second consecutive day on Monday, according to the CNN.

According to 'Raqqa is Being Slaughtered Silently', the French air force dropped 24 bombs on Monday, hitting the stadium and the museum in the suburbs used by the radical Sunni group as its jail and headquarters.

On Sunday, 12 aircraft dropped 20 bombs on Isis targets.

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