Q: In this task, a passage will be given and the goal is to generate a question about temporal relations based on that passage. A temporal relation describes the relation between two things with respect to time e.g., something happens/starts/terminates/... immediately/shortly/usually/... before/after/during/... something else.
 Your question should include an event, or ask about an event, and should not be a yes/no question.
Passage: About 200 Americans _ nonessential U.S. Embassy staff and their families _ left Pakistan today on orders from Washington following a ``pattern of threats'' against Americans there since the Africa bombings. The diplomats were flown to Brussels, Belgium.
A:
What event has already finished?