South Korea has a republican form with the division of powers into three rooms: executive, legislative and judicial. South Korea's executive institution is headed by the president as head of state and the prime minister as head of government. However, the President has greater authority in state decision-making, domestic and foreign relations. The President has served for the past 5 years. South Korean elections use a popular vote system and the last one was held in December 2012 with President Park Geun Hye as the winner. In the legislature, South Korea has the unicameral National Assembly or Gukhoe selected once every 4 years and was last held on April 11, 2012. . The Assembly has 299 seats and is occupied by representatives of different political parties. In addition to judicial institutions, South Korea has the Supreme Court and the Court of Appeals of the Constitutional Court. South Korea itself has many political parties, according to the South Korean Election Commission, political parties registered in 2012 by 8 parties. However, only two major parties dominate the election results: the ruling party and the Saenuri United Democratic Party. South Korean politics alone cannot be separated from its relationship with North Korea. The Korean War ended with a truce in 1953 and has not had a peace treaty to date. Therefore the two Koreas are still technically in a state of war. In relation to this situation, the two Koreas have continued to increase their military strength both in terms of armaments and combat personnel. Both Koreans implement compulsory conscription for all citizens, but in South Korea only for male citizens over the age of 20. North Korea's military aggression into South Korea on June 25, 1950 marked the beginning of the Korean War. This aggression takes 3 days and North Korea... middle of paper......South Korea currently ranks seventh in the ranking of US trading partners, and has become the country with the fifteenth largest economy largest in the world (U.S. Department of State Diplomacy, 2012). South Korea's economy is currently undergoing a shift from centrally planned public investment to market-oriented models. This does not exclude the emergence of South Korean chaebols (giants) that control the world market, such as car brands Hyundai and Kia, as well as electronic products from Samsung and LG. Currently South Korea is also developing its market in the United States with KORUS FTA or Korea-US Free Trade Agreements agreed in 2011 and become the second largest FTA of the United States after NAFTA and the second largest of Korea of the South after the Korea-European Union FTA. This makes South Korea one of the tiger and motor economies of East Asia .