Over-reaction?
Are we reacting too quickly, given that the dustcloud is not yet near many of the closed airports? Obviously as the dustcloud's presence manifests itself, then no flights can take place near it. No flames please, just reasoned answers, if I am myself over-reacting!!
(I have myself diverted due to a volcanic eruption in Sicily which closed Catania while we were en-route. We spent a nice 24 hours in Palermo!)