A BUDDHIST monk is critically ill in hospital after setting himself on fire to protest against South Korea’s settlement with Japan on compensation for wartime sex slaves.

A hospital official says the 64-year-old monk suffered third-degree burns across his body and serious damage to his organs. He is unconscious and unable to breathe on his own.

In his notebook, the 64-year-old called president Park Geun-hye a “traitor” over her government’s 2015 agreement with Japan,which sought to settle a row over South Korean women who were forced into sexual slavery by Japan’s Second World War military.

Many South Koreans say Japan's compensation is not enough.