Dharamsala, Oct 4 (ANI): American Nobel Peace Laureate, Jody Williams has said that India should be congratulated for the support it has extended to Tibet over the years. Williams, who along with another Peace Laureate, Shirin Ebadi, was in Dharamsala after boycotting the World Summit of Nobel Peace Laureates scheduled in South Africa. They arrived at Dharamsala for the 25th anniversary of conferment of the Nobel Peace Prize on the 14th Dalai Lama on Thursday (October 02). A government of exiled Tibetans and tens of thousands of refugees are based in India. China, which regards the Dalai Lama as a dangerous separatist, has ruled Tibet with an iron fist since Communist troops marched in 1950.