sentences:  By the end of August 1444, the Karamanids were subdued, leaving Murad with the impression that his borders were secure.He expected that the favorable terms granted in both the Peace of Szeged and the settlement with İbrahim II of Karaman would give a lasting peace.Shortly after the Karamanids' submission, therefore, Murad abdicated in favor of Mehmed II, his twelve-year-old son, intending to enjoy a peaceful retirement.