French politicians have asked British special forces to provide extra security during the international tournament, including guards at team hotels and during training sessions.
France has invoked a previously unused clause in the European Union (EU) Lisbon Treaty to beef up security at the European tournament in the wake of the Paris attacks which saw 130 people killed by crazed terrorists.
France’s Stade de France was one of six targets across the French capital attacked by gunmen on November 13.
Three militants detonated their suicide vests outside the football stadium during a friendly between France and Germany after they failed to get into the match.
The explosions that killed three people could be heard during the match - which was attended by the French President François Hollande - on live television.
The German football team was evacuated from their hotel following a bomb threat - just hours before Paris attacks.
ISIS terrorists also targeted the Bataclan music venue in the city as well as restaurants and bars.
The FA is also expected to increase the number of security staff on duty during Euro 2016 and will probably cancel team walkabouts.
French Defence Minister Jean-Yves Le Drian called the move a “political act of great significance”.
The EU defence clause calls on member states to help “by all the means in their power” a country that is victim of an “armed aggression”.
France adamantly said Euro 2016 would take place next year after security in the 10 host cities was questioned after the Paris attacks.
Security is expected to be particularly tight at England’s first game against Russia on June 11 in Marseille - as both nations are currently involved in bombing campaigns against ISIS in Syria and Iraq.
It is thought only fans with tickets will be able to get through extra tight security, with a specially set up ‘exclusion zone’ around the Stade Velodrome while armed undercover officers walk among fans in the streets.
A number of football matches were called off in the wake of the Paris attacks, including a Germany Netherlands game where terrorists planned to detonate three bombs inside a stadium.
French Interior minister Bernard Cazeneuve said security for the month-long tournament will be reinforced to ensure “the fan zones will be put in place”.
Fan zones are typically set up in squares and parks near city centres where supporters can watch games on a big screen. Security in such areas is usually far more lax than at stadiums.
The fan zone in Paris is expected to be located on Champ de Mars located below the Eiffel Tower. The area will hold up to 120,000 fans.
Russian sports minister Vitaly Mutko, who chairs the organising committee for the World Cup, said there would be a particular focus on protecting crowds gathered in fan zones.
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