Indonesia has been a member of the United Nations since 1950 and was a founding member of the Non-Aligned Movement (NAM) and the Organisation of Islamic Cooperation (OIC). Indonesia is a signatory to the ASEAN Free Trade Area agreement, the Cairns Group, the World Trade Organization (WTO), and an occasional OPEC member. During the Indonesia–Malaysia confrontation, Indonesia withdrew from the UN due to the latter's election to the United Nations Security Council, although it returned 18 months later. It marked the first time in UN history that a member state had attempted a withdrawal. Indonesia has been a humanitarian and development aid recipient since 1966, and recently, the country established its first overseas aid program in late 2019.