1.   UN troops intervened to avert a threat of violent conflict.

2.   Members of Congress, meanwhile, stepped up their efforts to persuade the White House to intervene to avert a strike.

3.   Last week, the Central Bank said it would allow the real to float against the dollar but might intervene to avert sudden changes.

4.   A strike by American Airlines pilots loomed large Friday after a federal mediator said it was unlikely President Bill Clinton would intervene to avert a walkout at midnight.