Jaro Essa was a Bajoran politician who served as minister in the Bajoran Provisional Government in 2370. He was also the leader of the Alliance for Global Unity that sought to remove the Federation from the Bajoran system. He attempted to bring down the Provisional Government and install himself as leader of Bajor.
In 2370, Jaro appointed Li Nalas to the post of Bajoran liaison officer on Deep Space 9 with the designation of navarch, following his return from Cardassia IV. He had Kira kidnapped when she came too close to discovering his plot. Jaro revealed to her that he was the leader of the Circle, and that he assigned Li Nalas to the station so the war hero wouldn't interfere with Jaro's coup.
He was buying weapons from the Kressari who were a front for the Cardassians who were trying to undermine the Bajoran government. He believed that if Bajor was heavily armed, it would not need anyone's protection. Bajor could order the Federation out. Jaro was assisted in his dealings by Vedek Winn Adami, General Krim and Colonel Day. His plan failed when Kira and Jadzia Dax revealed to the Bajoran Ministers that the Cardassians were secretly behind the arming of the Circle and provided evidence to prove it.