Well, we have been bombed a few years ago: Antwerp has known 2 terrorist attacks; Paris has had a wave of terrorism in 1986; Russia (Moskow) has been under terrorist attacks.....
And we are used to having to be present at the airport 2 hours before take off. Normal procedure.

And the main reason is of course the US unilateral support of Israel (certainly perceived as such). I remember Arafat saying the PLO chart signifying the destruction of Israel is "Null and Void" or "Caduc" in french, which he also used. The PLO had recognized the State of Israel (Israel of before 1967).
Now, Arafat could help the US in any way it wishes (contrary to the Gulf war time when the PLO joined Irak) in the hope that the US will return to the peace negociation process.

Raoul