The UN mission put an end to major violence, but could not resolve the underlying tensions as inter-communal talks continued to struggle. The violence continued through 1964, dividing the island into enclaves as both Greek and Turkish governments supported and supplied their respective sides of the conflict. Enosis began to be seen as impractical, under the assumption that “union with Greece would inevitably mean war with Turkey" as the military dictatorship in Athens opposed independent Cypriot efforts to resolve the conflict through inter communal talks. This culminated in a coup in July 1974 by the Greek-led Cypriot National Guard. On July 20, Turkish troops landed on the island, with the Turkish government invoking the treaty of Guarantee, which permitted the three guaranteeing powers to intervene in the case of a constitutional crisis. Several ceasefires were attempted, but failed, while UNFICYP forces attempted to protect civilians and evacuate foreign missions. When a ceasefire was finally declared by Turkish forces, the UNFICYP quickly established disengagement zones between the opposing forces, stretching across the island.