The Israeli Education Ministry has banned most school trips to Europe over fears of further operations by Daesh.

In a special directive that went out to all Israeli schools this week, the ministry's security department instructed schools to suspend all delegations and trips to Europe unless the students are accompanied by certified security personnel.

The directive specifically warned against visits to large cities such as Paris and Berlin, and added that in cases where the visits do go ahead, pupils are not to be allowed to use public transport or walk around on their own but are to stay together under their teachers' supervision. While there a no unusual alerts over the targeting of Israeli citizens in Europe, the assumption of security services is that Israeli groups in Europeare at heightened risk.

Six people were killed in 2012 when a bus of Israeli tourists was bombed in Bulgaria, an attack that has been connected to Hizbollah.

The ministry's directive does not include Israeli school delegations to Poland, where tens of thousands of young Israelis annually visit Holocaust sites, because there is an extensive security set-up there protecting the groups.

Israel's national carrier, El Al, is also reported by Channel Two to have changed its security regulations for air crew staying overnight in European destinations, directing them not to move around the cities in uniform and not to stay overnight in Brussels.