If investing in a small cap "non-producer" isn't risky enough,...

If investing in a small cap "non-producer" isn't risky enough, it sure is compounded when they're trying to get started in a foreign country. Your post highlights this Raider and complications like this should have already been taken into consideration by any investor in GPR. Cambodia will also have its risks - Fiji too for that matter. For anyone who might be feeling jittery about this, I've downloaded a few announcements where GPR seem to be addressing a few concerns brought up in the article you posted.

http://www.asx.com.au/asx/statistics/displayAnnouncement.do?display=pdf&idsId=01861885

Under the heading - Operational Staffing - GPR highlight their intention to work with the local communities which include employing them

http://www.asx.com.au/asx/statistics/displayAnnouncement.do?display=pdf&idsId=01943521

Under the heading - Social - GPR highlight the importance of working with its key stakeholders, particularly local communities and PNG authorities

Then there's the appointment of Ian Clyne: - In 2013 he concluded a 5 year contract as Group CEO & Managing Director of Bank South Pacific Limited in Papua New Guinea, completing a major Transformation program changing from a typical 3rd world banking institution into an innovative, technology driven, modern banking institution.
http://www.ianbclyne.com/

I have no doubt that GPR are well aware of the current political environment in PNG but are pushing ahead regardless. PNG needs to be careful. On the one hand they could do with a cash injection - something the mining industry might give them - but if they're not careful, they could easily scare off new and perhaps even existing mine operations - leaving them in a worse position than they're already in.

It's a tricky business