sentence1: after the first meeting between leaders of the european union and leaders from albania, bosnia and herzegowina, croatia, macedonia and serbia and montenegro, leaders from the western balkan countries pledge to diminish organized crime and corruption in the balkans to meet requirements of european union membership. 
sentence2: leaders from albania, bosnia and herzegowina, croatia, macedonia and serbia and montenegro met for the first time with european union leaders to pursue joining the european union.