Korean Confucianism. Today, South Korea has about 7 million Buddhists, most of them affiliated to the Jogye Order. Most of the National Treasures of South Korea are Buddhist artifacts. Health South Korea has a universal healthcare system. According to one ranking, it has the world's second best healthcare system. Suicide in South Korea is the 10th highest in the world according to the World Health Organization, as well as the highest suicide rate in the OECD. South Korean hospitals have advanced medical equipment and facilities readily available, ranking 4th for MRI units per capita and 6th for CT scanners per capita in the OECD. It also had the OECD's second largest number of hospital beds per 1000 people at 9.56 beds. Life expectancy has been rising rapidly and South Korea ranked 11th in the world for life expectancy at 82.3 years by the WHO in 2015. It also has the third highest health adjusted life expectancy in the world. Foreign relations South Korea maintains diplomatic relations with more than 188 countries. The country has also been a member of the United Nations since 1991, when it became a member state at the same time as North Korea. On 1 January 2007, former South Korean Foreign Minister Ban Ki-moon served as UN Secretary-General from 2007 to 2016. It has also developed links with the Association of Southeast Asian Nations as both a member of ASEAN Plus three, a body of observers, and the East Asia Summit (EAS). In November 2009, South Korea joined the OECD Development Assistance Committee, marking the first time a former aid recipient country joined the group as a donor member. South Korea hosted the G-20 Summit in Seoul in November 2010, a year that saw South Korea and the European Union conclude a free trade agreement (FTA) to reduce trade barriers. South Korea went on to sign a Free Trade Agreement with Canada and Australia in 2014, and another with New Zealand in 2015. North Korea Both North and South Korea claim complete sovereignty over the entire peninsula and outlying islands. Despite mutual animosity, reconciliation efforts have continued since the initial separation between North and South Korea. Political figures such as Kim Koo worked to reconcile the two governments even after the Korean War. With longstanding animosity following the Korean War from 1950 to 1953, North Korea and South Korea signed an agreement to pursue peace. On