61.   They have recently come under attack from the combatants and many of the camps faced food shortages because food convoys had been blocked by the Serbs.

62.   U.N. convoys have been blocked, U.N. cease-fires and buffer zones ignored.

63.   U.N. convoys are blocked, U.N. cease-fires and buffer zones ignored.

64.   U.N. officials warn of growing food shortages in a northwestern pocket where persistent fighting and intransigent combatants have blocked food convoys.

65.   Unrelenting fighting and combatants who block food convoys are creating severe food shortages in northwestern Bosnia, U.N. officials say.

66.   Villagers in Chumphon blocked a road Thursday with five corpses to protest tardy aid, blocking a convoy of provincial officials on the way to distribute supplies.

67.   Yet aid convoys were routinely blocked, sometimes for months.

68.   Yet during the territorial struggle, Bosnian Serbs defied U.N. safe zones, shut down airports receiving relief supplies and blocked U.N. convoys.

69.   He also called on UNPROFOR to ensure that humanitarian aid convoys not be blocked by the Serbs.

70.   However, the Russian military, embarrassed by the raid on Kizlyar, was ordered to block the convoy, resulting in the stand-off.