The U.S. Defense Department has banned U.S. troops and employees from traveling in their free time within 50 kilometers of Paris, following the terrorist attacks in the French capital on Friday night.
The ban was put in place late Sunday by U.S. European Command. It applies to all military personnel, civilian employees, contractors and family members who are sponsored by a specific military command. Anyone who wants to travel to the area on official business or for emergency reasons must obtain approval from a general officer or other senior official in their chain of command.
According to EUCOM's website, the travel restriction applies to travel anywhere in France, not just to Paris:
Official travel and emergency leave travel to France requires approval from the first general/flag officer (or SES) in the chain of command.
Do you suppose EUCOM consulted the Chief of Mission in France before issuing this travel restriction and making it a matter of public information? I don't know, but I think not.
I could have sworn there is some kind of official USG policy about such situations. Maybe it's in this publicly available source of information:
7 FAM 052.3 Coordination of Threat Information with the Military Under the No Double Standard Policy
It can be consistent with the "no double standard" policy for the Department of State to determine that sharing information with private U.S. citizens is not appropriate in cases where the Department of Defense (DoD) releases threat information to military personnel. For example, upon receiving information concerning a possible threat to U.S. citizens in a particular country, the chief of mission (COM) may conclude that the information is not credible. In this case, the Emergency Action Committee (EAC) would not recommend releasing the information to other DOS personnel and private U.S. citizens in country. However, a military commander, upon receiving the same threat information, might decide to release the threat information to U.S. troops in country, or might confine the troops to their base without informing them of the alleged threat. The paragraphs below provide a clarification of how military procedures relate to the "no double standard" policy.
DoD Personnel Under Military Command: The Department of Defense is responsible for the safety and security of DoD personnel under military command. U.S. military commanders therefore make independent decisions about whether or when to disseminate threat information to their personnel. Should post become aware of a DoD notification made locally, post should immediately inform the Department. Once notified that DoD has disseminated threat formation to their personnel, the Department of State decides, in conjunction with relevant posts, whether information about the threat is such that the Department of State should also disseminate it to the non-official U.S. community.
So if I understand EUCOM correctly, there is a threat condition that effects military personnel, civilian employees, contractors, family members, and persons on official travel or emergency leave, but we civilians and tourists may carry on enjoying Paris as usual.
I haven't seen any press accounts of American tourists asking U.S. Embassy Paris whether it's safe to travel there now. Tourism in France is probably at a low ebb at the moment anyway. But still, sending uncoordinated security warnings is a very poor practice.