11.   Shots were fired Thursday when Muslims and Serbs challenged each other in northern Bosnia, near an area where a similar confrontation turned deadly recently.

12.   Such confrontations thus could turn into renewed fighting once the foreign troops, who are scheduled to depart in eight months, are gone.

13.   The confrontation turned violent when opposition supporters rioted and Yeltsin sent tanks and troops against the legislature.

14.   The confrontations have occasionally turned violent.