Tensions soon develop among different Greek factions, leading to two consecutive civil wars.

Meanwhile, the Ottoman Sultan negotiates with Muhammad Ali of Egypt, who agrees to send his son Ibrahim Pasha to Greece with an army to suppress the revolt in return for territorial gain.

Ibrahim lands in the Peloponnese in February 1825 and has immediate success: by the end of 1825, most of the Peloponnese is under Egyptian control, and the city of Missolonghi—put under siege by the Turks since April 1825—falls in April 1826.

Although Ibrahim is defeated in Mani, he has succeeded in suppressing most of the revolt in the Peloponnese and Athens has been retaken.