The Expatriates by William Haggard
This thriller is set on the island of Cyprus, where the Turks have overthrown the Greeks and established a province in the north. Colonel Mehmet Eldom, charged to keep peace there, partly to protect the tourist industry, is threatened by Greek terrorism and PLO raids on the pyrite mines. William Haggard has written many books including The Meritocrats, The Need to Know, The Martello Tower and The Diplomatist.