How bad is it? 

Myanmar Army landmines along border with Bangladesh pose deadly threat to fleeing Rohingya - Amnesty International

“This is another low in what is already a horrific situation in Rakhine State. The Myanmar military’s callous use of inherently indiscriminate and deadly weapons at highly trafficked paths around the border is putting the lives of ordinary people at enormous risk,” said Tirana Hassan, Amnesty International’s Crisis Response Director, who is currently near the Bangladesh-Myanmar border."

The Rohingya, I'm sure, are grateful to know that a Nobel Peace Prize laureate, "champion of democracy" and honourary Canadian citizen is massacring them, rather than some vicious despot.