Commercial airlines around the world on Monday were weighing how long to suspend Middle East flights after the U.S. struck Iran. Singapore Airlines, one of the highest-profile in Asia, had called the situation "fluid" on Sunday as it cancelled flights from Singapore to Dubai following a security assessment.

The State Department has doubled the number of emergency evacuation flights it is providing for American citizens wishing to leave Israel, ordered the departure of nonessential staff from the U.S.