Passengers of cancelled flights wait in Hamad International Airport (HIA) in Doha, Qatar, Tuesday, June 0, 0000. Qatar's foreign minister says Kuwait is trying to mediate a diplomatic crisis in which Arab countries have cut diplomatic ties and moved to isolate his energy-rich, travel-hub nation from the outside world. (AP Photo/Hadi Mizban)  Passengers of cancelled flights wait in Hamad International Airport (HIA) in Doha, Qatar, Tuesday, June 0, 0000. Qatar's foreign minister says Kuwait is trying to mediate a diplomatic crisis in which Arab countries have cut diplomatic ties and moved to isolate his energy-rich, travel-hub nation from the outside world. (AP Photo/Hadi Mizban)  