What does Psalm 83:11 mean?
Asaph prays that the Lord will bring doom to the leaders of conspiring enemy nations (Psalm 8:5–8). In earlier passages, he asked God to deliver the same fates suffered by the Midianites, the Canaanite king Jabin, and Jabin's military general Sisera (Psalm 83:9–10). Here, Asaph continues to make it clear that he wishes death and ruin on those who would destroy Israel (Psalm 83:1–4).The men mentioned here were nobles from Midian during their oppression of Israel (Judges 6:1). Midian thought to conquer and control Israel's territory (Psalm 83:12). Yet, Gideon's forces routed the much-larger Midianite army (Judges 7:23–24). They captured and beheaded men described as "princes" of Midian: Oreb and Zeeb (Judges 7:25). Then Gideon's men captured "kings" of Midian, Zebah and Zalmunna, whom Gideon personally executed (Judges 8:12, 21). Oreb and Zeeb may have been sons of Zebah and Zalmunna. It's also possible they were not related, but merely two military leaders, while Zebah and Zalmunna were rulers.
References like these are why Psalm 83 is labelled "imprecatory:" calling directly for harm or disaster to come on someone else.