Context: On 15 July 1974, the Greek military junta under Dimitrios Ioannides carried out a coup d'état in Cyprus, to unite the island with Greece. The coup ousted president Makarios III and replaced him with pro-enosis nationalist Nikos Sampson. In response to the coup, five days later, on 20 July 1974, the Turkish army invaded the island, citing a right to intervene to restore the constitutional order from the 1960 Treaty of Guarantee. This justification has been rejected by the United Nations and the international community.

Question: What date was a coup d'etat carried out in Cyprus?
Answer: 15 July 1974

Question: Who lead the coup d'etat attempt?
Answer: Dimitrios Ioannides

Question: Who replaced president Makarios Ill?
Answer: Nikos Sampson

Question: What did the Turkish army to do respond to the coup d'etat?
Answer: invaded the island

Question: Which organization rejected the justification used by Turkey to invade?
Answer: United Nations