Minister Xelas was an elininae Tezwan who served in the Assembly as a member of the Lacaam party until 2379. It is likely that Xelas served as Minister of Defense as Prime Minister Kinchawn ordered Xelas to keep the artillery on full alert after they had destroyed the Klingon fleet in orbit around Tezwa and were expecting retaliation. (TNG - A Time to... novel: A Time to Kill)