text:  Turkey's president has said his country might build a naval base on the breakaway territory of northern Cyprus. Recep Tayyip Erdogan was speaking as he returned from a visit to Cyprus to mark 50 years since Turkish troops invaded. They occupied one-third of the island and declared it to be independent, though no other countries have officially recognised this. His suggestion of constructing a naval facility there is likely to inflame tensions further with Cyprus's mostly Greek-speaking south.