In 1974 the US-backed Greek junta – in power since 1967 – partly in a move to draw attention away from internal turmoil and partly unsatisfied with Makarios' policy in Cyprus, on 15 July attempted a coup to replace him with Nikos Sampson and declare union with Greece. Seven days later, Turkey launched an invasion of Cyprus allegedly to reinstate the constitution but which resulted in blooded conflict, partition of the island and mass ethnic cleansing. The overwhelming Turkish land, naval and air superiority against island's weak defenses led to the bringing of 37% of the land under Turkish control.