21.   NATO has subsequently destroyed key bridges on two of these routes, so there is now only one viable route.

22.   On Friday, demonstrators cut off a key bridge on a highway leading to the southern suburbs of Buenos Aires.

23.   On Saturday, they briefly blocked a northern highway leading to Hungary and on Monday they sealed a key bridge in Belgrade with armored personnel carriers.

24.   On Saturday, they briefly blocked a northern highway leading to Hungary, and on Monday they sealed a key bridge in Belgrade with armored personnel carriers.

25.   On Saturday, they briefly blocked a northern highway leading to Hungary, and on Monday sealed a key bridge in Belgrade with armored personnel carriers.

26.   On Saturday, they briefly blocked a northern highway leading to Hungary, and on Monday they temporarily sealed a key bridge in Belgrade with armored personnel carriers.

27.   Once the key bridge between East and West, the organization has been foundering for a role after the collapse of the Iron Curtain.

28.   Once the key bridge between East and West, the OSCE has been foundering for a role after the collapse of the Iron Curtain.

29.   Tanks and troops are dug in near the main road, and the army has mined part of the border and rigged a key bridge with explosives.

30.   The government bombed a key bridge between Croatia and Bosnia today, trying to sever the last remaining link between Serbs in those two republics.