Bulgarian President Petar Stoyanov (L) listens to General Ronald Keys,
commander of the NATO military exercise at the Graf Ignatievo airport
near the city of Plovdiv, some 125 km east of Sofia on September 20,
2001. Military personnel and equipment from nine NATO member states and
13 candidates for NATO membership take part in the 10-day exercise code
named "Cooperative Key-2001". REUTERS/Oleg Popov

REUTERS