Dutch ramp up border security, say 'at war' with Islamic State

Speaking to reporters, Rutte said all traffic to and from France and Paris would be closely monitored, including at airports and railways stations. All security services were working at a heightened level of preparedness, he added.

"Our values and our rule of law are stronger than their fanaticism," he said. "ISIS (Islamic State) is our enemy. We are at war with ISIS. We are not at war with a country, a belief or with Islam."

(Reporting By Thomas Escritt and Anthony Deutsch; editing by John Stonestreet)