During the Ottoman wars in Europe, he was able to capture the city of Beyşehir from the Ottomans. However, in 1433, Ottoman Sultan Murat II returned to Anatolia and Ibrahim sued for peace in 1435.[2] Nevertheless, shortly after the peace, Ibrahim laid a siege on Amasya an important Ottoman city to which Murat reacted by supporting the Dulkadirids to capture the city of Kayseri and İsa, Ibrahim's brother, to capture Akşehir from Karamanids. Ibrahim was forced to lift the siege in 1437.