Who is clytemnestra to agamemnon?

Clytemnestra is the wife of Agamemnon, the King of Argos, in Greek mythology. Their relationship becomes strained after Agamemnon sacrifices their daughter, Iphigenia, to ensure favorable winds for the Greek fleet during the Trojan War. Clytemnestra's grief and anger lead her to plot revenge against Agamemnon, culminating in his murder upon his return from the war. Their story highlights themes of betrayal, vengeance, and the consequences of choices made in the name of duty.