South Korea maintains diplomatic relations with 191 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. South Korea has also hosted major international events such as the 1988 Summer Olympics and 2002 World Cup Soccer Tournament (2002 FIFA World Cup co-hosted with Japan) and the 2011 IAAF World Championships Daegu South Korea. Furthermore, South Korea had hosted the 2018 Winter Olympics which took place in Pyeongchang, South Korea from 9 to 25 February.