11.  During the day, demonstrators blocked a key bridge on a highway leading to the southern suburbs of Buenos Aires.

12.  Earlier Tuesday government war planes struck at a key bridge connecting Croatian and Bosnian Serb holdings.

13.  Earlier Tuesday government war planes struck twice at a key bridge connecting Croatian and Bosnian Serb holdings.

14.  Government planes trying to sever a supply link between Serbs in Croatia and Bosnia bombed a key bridge connecting the two republics Tuesday, but failed to destroy it.

15.  Government forces seized a key bridge on the road linking the capital Dushanbe with the eastern part of Tajikistan, the Interfax news agency reported.

16.  Government troops captured another key bridge last week.

17.  He said the Ethiopians had blocked a key bridge across the Juba River at Burdhubo.

18.  In Mogadishu, a spokesman for the Marehan subclan said his fighters were busy building defense lines around key bridges which they fear may be the next target.

19.  Interfax said government forces seized a key bridge Friday on the road linking Dushanbe, the capital, with the Tavildara region.

20.  NATO missiles knocked out a key bridge in the city on Thursday, blocking traffic on the waterway.