The State Department alerts U.S. citizens to the potential for terrorist attacks in Europe. Current information suggests that al-Qa'ida and affiliated organizations continue to plan terrorist attacks. European governments have taken action to guard against a terrorist attack and some have spoken publicly about the heightened threat conditions.
Terrorists may elect to use a variety of means and weapons and target both official and private interests. U.S. citizens are reminded of the potential for terrorists to attack public transportation systems and other tourist infrastructure. Terrorists have targeted and attacked subway and rail systems, as well as aviation and maritime services. U.S. citizens should take every precaution to be aware of their surroundings and to adopt appropriate safety measures to protect themselves when traveling.
We continue to work closely with our European allies on the threat from international terrorism, including al-Qa'ida. Information is routinely shared between the U.S. and our key partners in order to disrupt terrorist plotting, identify and take action against potential operatives, and strengthen our defenses against potential threats.
We recommend U.S. citizens register their travel plans with the Consular Section of the U.S. Embassy through the State Department's travel registration website. Travelers may obtain up-to-date information on security conditions by calling 1-888-407-4747 toll-free in the U.S. and Canada, or on a regular toll line at 1-202-501-4444 from elsewhere in the world.