The Republic of Cuba consists of the island of Cuba (the largest and second-most populous island of the Greater Antilles), Isla de la Juventud and several adjacent small islands. Cuba is located in the northern Caribbean at the confluence of the Caribbean Sea, the Gulf of Mexico and the Atlantic Ocean. Cuba is south of the eastern United States and The Bahamas, west of the Turks and Caicos Islands and Haiti and east of Mexico. The Cayman Islands and Jamaica are to the south. The national flower is Hedychium Coronarium Koenig, most known as "mariposa" (butterfly) and the national bird is "Tocororo" or "Cuban Trogon" from the family of Trogonidae. Cuba is the most populous nation in the Caribbean. Its people, culture and customs draw from several sources including the aboriginal Taíno and Ciboney peoples, the period of Spanish colonialism, the introduction of African slaves, and its proximity to the United States. Cuba's once-ambitious foreign policy has been scaled back and redirected as a result of economic hardship and the end of the Cold War. Cuba aims to find new sources of trade, aid, and foreign investment and to promote opposition to U.S. policy, especially the trade embargo and the 1996 Libertad Act. Cuba has relations with over 160 countries and has civilian assistance workers -- principally physicians and nurses -- in over 20 nations. Since the end of Soviet backing, Cuba appears to have largely abandoned monetary support for guerrilla movements that typified its involvement in regional politics in Latin America and Africa, though it maintains relations with several guerrilla and terrorist groups and provides refuge for some of their members in Cuba. Cuba's support for Latin guerrilla movements, its Marxist-Leninist government, and its alignment with the USSR led to its isolation in the hemisphere. Cuba is a member of the Organisation of American States (OAS), although its present government has been excluded from participation since 1962 for incompatibility with the principles of the inter-American system. Cuba hosted the Non-Aligned Movement (NAM) summit in September 2006 and will hold the NAM presidency until 2009. In the context of the NAM and its ordinary diplomacy, Cuba has developed friendly relations with Iran, North Korea and other rogue states.