The so-called Islamic State group has released a video purporting to show nine jihadists involved in the November Paris attacks that killed 130 people, in which they threaten "coalition" countries including Britain.
The video posted on jihadist websites is entitled "Kill wherever you find them", and shows four Belgians, three French citizens and two Iraqis said to be responsible for the attacks.
It also depicts the nine carrying out atrocities before the rampage in Paris, including beheading and shooting people described as hostages.
In the video the jihadists, speaking in French and in Arabic, say their "message is addressed to all the countries taking part in the (US-led) coalition" that has been fighting IS in Syria and Iraq since September 2014.
The footage also shows a picture of British Prime Minister David Cameron accompanied by the words in English: "Whoever stands in the ranks of kufr (unbelievers) will be a target for our swords."
The video, produced by IS's Al-Hayat Media Centre, describes the attackers as "lions" who "brought France to its knees".
The footage shows images of the Paris strike claimed by the so-called Islamic State as well as security operations by French special forces during the onslaught.
It was not clear why the group released the video more than two months after the bloodshed on 13 November in which jihadists armed with guns and suicide belts launched coordinated attacks on Paris bars, restaurants, and a concert hall.
Seven of them died during the attacks and two in a subsequent police raid but the total number of those directly involved is still unclear.
Among the men purportedly shown in the video is suspected ringleader Abdelhamid Abaaoud, identified by his nom de guerre Abu Umar al-Baljiki, or Abu Umar the Belgian.
Abaaoud, who was widely thought to have been in Syria fighting with IS forces in the past, was killed in a shootout with French police days after the bloodiest attacks to hit Europe since the Madrid train bombings in 2004.
French President Francois Hollande has said that the Paris attacks were planned in Syria but prepared and organised in Belgium.
Belgian authorities have formally charged 10 people in the case, including a number from the troubled Brussels neighbourhood of Molenbeek where a number of extremists have stayed over the last two decades.
Four suspects remain at large, including Salah Abdeslam who allegedly drove suicide bombers to the French national stadium outside Paris, as well as Mohamed Abrini, suspected of having helped scout out the attack sites.
Both are from Molenbeek.
EU security chiefs brace for more Islamist attacks
Meanwhile, the EU's police agency has said IS and other militants are very likely to attempt new attacks in Europe following those in Paris.
The assessment was based on discussions concluded eight weeks ago by security agencies from EU states. The eight-page report said further attacks could even take place quite soon.
The report said that the events in Paris "appear to indicate a shift towards a broader strategy of IS going global, of them specifically attacking France, but also the possibility of attacks against other member states of the EU in the near future".
At a news conference to mark the launch of a new European Counter Terrorism Centre within Europol, based in The Hague, its director Rob Wainwright said IS "has the willingness and capability to carry out further attacks in Europe".
Since the Paris attacks, Mr Wainwright said further similar attacks in Europe are likely and that "lone wolf" militants are no longer the prime threat.
The Europol report said IS may have established an "external action command trained for special forces-style attacks in the international environment" and noted that, as the Paris attacks showed, the group was largely active in Europe through radicalised European citizens, not foreigners.
Currently, some 30 Europol experts are working to support the Franco-Belgian investigation into the Paris attack, Mr Wainwright said, helping track movements of money, weapons, fake documents and other elements of the plot.