The former Anglican archbishop Desmond Tutu poses for a photograph after an interview with Reuters in New Delhi November 7, 2013. A boycott of a meeting of Commonwealth leaders this month in Sri Lanka could help pressure Colombo to address alleged war crimes against minority Tamils, South African peace campaigner and Nobel Laureate Archbishop Desmond Tutu said on Thursday. To match story SRILANKA-TUTU/ REUTERS/Anindito Mukherjee (INDIA - Tags: RELIGION HEADSHOT)