how can the league of arab states foster a police force for the arab states to encourage arab unity

how can the league of arab states foster a police force for the arab states to encourage arab unity? compare to europol and african union. Would the arab states benefit from having such a police force for all arab states that are included in the idea of arab unity?
is there already a law in place for all arab states, is it enforceable in all states?
are there any security organisations for all arab states included in arab unity?
talk about the successes of europol and advantages and disadvantages to having an arab police force for the arab state similar to europol
talk about arrest warrants for criminals in other states - are these enforceable?
most importantly this essay must be based on the LAW side of it all, from the law's perspective how can the essay question be answered?