Shan State Progress Party (SSPP)
The SSPP signed a ceasefire agreement with the SLORC regime in 1989. In 2009, those ethnic armed groups that had ceased fighting were forced to become border guards under the Tatmadaw. Brigade 1, led by Col. Sao Pang Fa, refused, and the SSPP/SSA remained in operation as the principal Shan resistance army.