[Turkish Cypriot leader Mustafa Akinci arrives for the Cyprus reunification talks at the United Nations in Geneva]Leaders of ethnically divided Cyprus were to discuss territorial trade-offs on Wednesday, a crucial juncture in peace talks aiming for a long-elusive reunification deal that may be put to a referendum this year. For the first time in more than a decade, Greek and Turkish Cypriots plan to submit maps to the United Nations detailing their proposals on territorial boundaries between constituent states in a two-zone federation. The strategically located island in the eastern Mediterranean was split after a Turkish invasion in 1974 triggered by a brief Greek-inspired coup.