In 1542 Turkish vessels coming from the Red Sea began to encroach on Portuguese trading stations and activities in Azania. A Portuguese flotilla was despatched to oppose this encroachment and conducted some reprisals against coastal towns which had been friendly to the Turks, but did not encounter their ships This enterprise by the Turks emerged from the pleas to Constantinople made by Arab and Indian princes who were being oppressed by the demands and supremacy of Portugal in trade, religion and politics. The Turkish continued to make inroads from 1550-1660 under the Sultan Sulaiman II. In 1580 the Portugues throne went to Philp II of Spain and Portuguese interests and activity in the Red Sea and Indian Ocean – already in decay - waned. In 1585 serious Turkish raids by buccaneers began on the northern coasts of Azania in Somalia creating a new wave of influence in East Africa.