US diplomat Bill Richardson was accused Thursday of a "personal attack" on Myanmar's Aung San Suu Kyi after an excoriating take down of the former darling of the global rights community as he resigned from a panel on the Rohingya crisis.

A long-time friend of Myanmar leader Aung San Suu Kyi has resigned from an advisory board on the crisis in Rakhine state, saying it is nothing more than a cheerleading squad for the government.