My ex is blackmailing me on fb?

hi guys please help.. i broke up with my bf couple of times but he threathens and blackmails me with my pictures and vids. Now i quit my job and moved to another country i thought everything will work out ok and he will forget about me but now its gone worst.i want to go to the police but im a tourist here in an asian country and he is somewhere in the middle east.how can i file a police report about him??