Hash wrapped in tin foil...
That sounds like he knew what he was up too even if it was for a keep sake.
0.6 Gr of Hashish is nothing, it is about the size of a pencil eraser (how do I know? 100+ Grateful Dead concerts....).

Drug laws are stupid IMO and especially in the case of marijuana and hash (which is basically distilled pot).

In this case I am glad I live in USA/ California.

And what the hell is a UN narcotics force? That sounds like some sort of global police. I never want the UN telling me what to do. The UN has some plans to try and globally outlaw my 2nd Amendment rights. UN....yeh.
Bill