sentences:  He played an elite North Korean spy who defects after being betrayed by his country.In November 2013, Gong Yoo was appointed as a special representative of the United Nations Children's Fund (UNICEF) in Korea, in conjunction with a celebration of the 24th year since the Convention on the Rights of the Child (CRC) was adopted.Following his appointment, he has visited countries around the world to raise awareness of the situation of children in underdeveloped countries.