Yugoslav officials said today they will impose a unilateral cease-fire in its battle against Kosovo rebels for the Orthodox Easter holiday. Western leaders called the move a sham and pledged to press ahead with airstrikes. A Serbian journalist who's visiting Minneapolis says NATO's airstrikes are only worsening the humanitarian situation in Kosovo. Aleksandra Ajdanic is an editor for the BETA news service, an independent news agency in Belgrade. She left for the United States six days after the airstrikes began because she had been planning to attend a conference. She has connections to the Twin Cities because she was a fellow at Macalester College's World Press Institute last year. Ajdanic is continuing to follow the war through her agency's website, and is sharing her experience in the American media.