1.   But efforts to open roads into Sarajevo, exchange prisoners of war and end the fighting in the northwestern Muslim pocket of Bihac have been unsuccessful.

2.   Other U.N. officials said a second convoy, resupplying U.N. peacekeepers in the northwestern Bihac pocket, also had moved into Serb-held lands.

3.   Also Wednesday, the government apparently suffered a defeat in northwestern Bosnia, losing the town of Vrnograc in the embattled northwestern Bihac pocket.

4.   And skirmishes continued overnight between government troops and Serb rebels from neighboring Croatia south of Velika Kladusa, in the northwestern Bihac pocket.

5.   But fighting in the northwestern Bihac pocket has confounded U.N. efforts -- government troops there have mostly been battling rebel Serbs from nearby Croatia and renegade Muslims.

6.   Croatia late last month said it would help the Bosnian government defend the northwestern Bihac pocket, which enabled it to send thousands of troops into Bosnia.

7.   Croatian Serbs and renegade Muslims are allied with Bosnian Serbs and have been the main opponents of government troops in the northwestern Bihac pocket, which borders on Croatia.

8.   Delic spoke amid reports of heightened conflicts in the restive northwestern Bihac pocket, the most persistent obstacle to U.N. attempts to make the truce stick.

9.   Delic spoke amid reports of heightened fighting in the northwestern Bihac pocket, the most persistent obstacle to U.N. attempts to make the truce stick.

10.   Elsewhere, fighting was reported in the northwestern Bihac pocket.