ANKARA (Reuters) - Turkish President Tayyip Erdogan said on Monday it was time for a realistic proposal about a two-state solution on the divided island of Cyprus to be discussed, and added that the parameters of the current talks were not sustainable.Cyprus was split after a Turkish invasion in 1974 triggered by a brief Greek-inspired coup. The European Union admitted the island into the bloc in 2004, represented by the internationally recognised Greek Cypriot government in the south. Its north is a breakaway Turkish Cypriot state only recognised by Ankara. The latest attempt at reunification between the two Cypriot sides collapsed in disarray in mid-2017. Both sides blamed each other for the collapse, and Ankara accuses the EU of violating laws by only admitting Greek Cypriots. Speaking at a news conference with Turkish Cypriot President Ersin Tatar in Ankara, Erdogan said the approach of Greek Cypriots had blocked previous attempts to find a solution. “It must be understood that no result can be achieved under the current parameters following a negotiation process that has lasted more than half a century,” Erdogan said. “At this stage, we believe starting talks on the basis of a federation will be a loss of time. Therefore, we believe a two-state solution must now be brought to the table with a realistic proposal.” Turkey has said before a two-state mechanism is needed to solve the Cyprus issue, but has accused the Greek Cypriot government of not engaging in talks. Tatar said a Turkish proposal to hold an informal meeting between Turkey, Northern Cyprus, Greek Cypriots, Greece and the United Nations was “the last chance” for an agreement.