Baasha was succeeded by Elah, his son. He reigned briefly, for two years. Zimri, commander of half his chariots, conspired against him and struck him while he was drunk. Once Zimri took over, he killed all the house of Baasha, leaving no one. This fulfilled the prophecy of Jehu for all the sins of Baasha and the sins of Elah his son.
Seven days after Zimri became king, the people were encamped against Gibbethon of the Philistines. When they heard Zimri had killed Baasha and all his house, they made Omri, the commander of the army, king over Israel. After Zimri hear that, he went into the citadel and burned the house down upon himself and died.
A continual bloodletting occurred in Israel, as men jockeyed for position, assuming that their cunning and violence would win them favor. Sadly, the only thing it won them was judgement. Therefore, we see short tenures and murderous plots that place Israel in a position of upheaval and distrust. Do not seek to upend your brother in order to improve your own position in the kingdom. Instead, trust God for your next move, rather than your own plans. God will place you where you need to be and keep you there until He has fulfilled His purpose in your life!