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America and Israel’s attack on Iran disrupted flights across the Middle East and beyond Saturday as countries around the region closed their airspace and key airports that connect Europe, Africa and the West to Asia were directly hit by strikes.

Hundreds of thousands of travelers were either stranded or diverted to other airports after Israel, Qatar, Syria, Iran, Iraq, Kuwait and Bahrain closed their airspace. There also was no flight activity over the United Arab Emirates, flight tracking website FlightRadar24 said, after the government there announced a “temporary and partial closure” of its airspace.

That led to the closure of key hub airports in Dubai, Abu Dhabi and Doha, and the cancellation of more than 1,800 flights by major Middle Eastern airlines. The three major airlines that operate at those airports — Emirates, Qatar Airways and Etihad — typically have about 90,000 passengers per day crossing through those hubs and even more travelers headed to destinations in the Middle East, according to aviation analytics firm Cirium.

Two airports in the United Arab Emirates reported incidents as the government there condemned what it called a “blatant attack involving Iranian ballistic missiles” on Saturday.

Officials at Dubai International Airport, the largest in the United Arab Emirates and one of the busiest in the world — said four people were injured, while Zayed International Airport in Abu Dhabi said that one person was killed and seven others were injured in a drone strike. Strikes were also reported at Kuwait International Airport.