The French defense chief says nine European Union countries are set to formalize a plan for the creation of a joint European military intervention force, which would have the backing of Britain following its exit from the 28-nation bloc.

Representatives of the EU countries—France, Germany, Belgium, Britain, Denmark, the Netherlands, Estonia, Spain and Portugal—will meet in Luxembourg later on Monday to sign a letter of intent on the issue, Florence Parly said in an interview with Le Figaro.

The plan, which was launched last year by French President Emmanuel Macron, involves “joint planning work on crisis scenarios that could potentially threaten European security,” according to a source close to the minister.

The force is intended to be rapidly deployable to deal with those situations, including natural disasters, intervention in a crisis or evacuation of people.

The joint military force would be separate from other EU defense cooperation and will operate independently of the union.

“This is clearly an initiative that allows the association of some non-EU states,” Parly said. “The UK has been very keen because it wants to maintain cooperation with Europe beyond bilateral ties.”

Germany, which was initially reluctant to join the military plan, announced earlier this month that it would support it.

The new government in Italy “is considering the possibility of joining” but has not made a final decision yet, said the French minister. The former government had shown interest in the plan.

In December 2017, 25 EU states inked a major military deal, under which they agreed to cooperate in various projects, but it is not clear whether London would be allowed to take part in any of them once it leaves the bloc.

Britain, Europe’s biggest military power along with France, will no longer be allowed to operate within the union after its separation from the bloc.

The United Kingdom voted to leave the EU by a margin of 51.9 percent to 48.1 percent in a referendum held on June 23, 2016. It is now involved in a complicated debate with the EU for the separation.