Guwahati: Environmental activist Sonam Wangchuk has urged President Droupadi Murmu to intervene in the “disturbing situation” unfolding in Arunachal Pradesh’s Siang valley and protect the rights of indigenous communities, particularly the Adi people, who are opposing the proposed 11.2 gigawatt (GW) Siang Upper Multipurpose Project (SUMP). In a letter to the President on Tuesday, Wangchuk.