NATO forces say they are indefinitely suspending the training of Kosovo's security force for breaching its mandate.
NATO said in a statement Sunday that the alliance had called off its support for the 2,500-strong Kosovo Security Force following "the appearance of an armed, military-style KSF honor guard" at an event.
It says "this is inconsistent with (its) non-military status." Kosovo's force was set up last year with a role limited to civil emergencies as part of a plan that allowed Kosovo to secede from Serbia.
NATO is also protesting the display of its flag at the ceremony marking the 12th anniversary of the killing of the leader of the ethnic Albanian guerrilla group that fought Serbia in the 1998-1999 war. NATO says it is neutral to Kosovo's independence.