A military coup d'état sponsored by the Greek military junta was executed by the Cypriot National Guard on 15 July 1974. The coup plotters removed the sitting President of Cyprus, Archbishop Makarios III, from office and installed pro-Enosis nationalist Nikos Sampson. The Sampson regime was described as a puppet state, whose ultimate aim was the annexation of the island by Greece; in the short term, the coupists proclaimed the establishment of the "Hellenic Republic of Cyprus". The coup was viewed as illegal by the United Nations and led immediately to the Turkish invasion and ongoing occupation of Cyprus.