He refused to use the militia to put down civil unrest on Bajor, believing that it would lead to civil war. In reality, he was a member of the Circle, who wanted the Federation to leave the Bajoran sector. Krim led a siege on Deep Space 9 in 2370, but ultimately surrendered the station back to the Federation after meeting with Li Nalas and finding out that the Circle was backed by the Cardassians. He expected the Bajoran Provisional Government would ask for his resignation.
Although Krim was on the opposing side, he appeared to have a respect for his adversary, Benjamin Sisko, noting during their meeting that Sisko gave him information rather than use it as a bargaining chip. He had first met Sisko at a session of the Bajoran Executive Committee in 2369. In the later takeover of Deep Space 9, he was happy that Sisko had not abandoned his post. (DS9: "The Circle", "The Siege")
In Bajor: Fragments and Omens, a novel appearing in the volume Worlds of Star Trek: Deep Space Nine, Vol. II, Krim is given the full name of Krim Aldos. He is revealed to be the ex-husband of the new First Minister of Bajor, Asarem Wadeen, and to have spent the time between the "Circle" trilogy and the novel (late 2376) in seclusion, though a legal commission did not find him liable for the attempted coup. First Minister Asarem asks him to serve as Bajor's Federation Councilor after her first choice dies unexpectedly, and he reluctantly assumes the office.
Councilor Krim is still on the job in Articles of the Federation, set slightly over three years later, wherein he assumes an important position on the Federation Council's national security committee.
The Star Trek Customizable Card Game names him the commander of the Bajoran vessel Talnot.