The only plausible explanation for global warming is human activity. So we should ask the obvious question: Who profits from the activity that causes global warming and who funds the anti-science global-warming denialist groups?
There is no way to have a nation in today's world without various intelligence agencies handling a variety of issues from domestic security to detecting and anticipating international threats. We need people secretly watching the people that are secretly watching us. There are no two ways around it, and really every nation does, as just because you aren't, that doesn't mean other people won't, and unfortunately it probably means they will take it as a sign of a free meal with your nation being the special of the day. Humans just haven't evolved beyond the need to take by force the belongings of their neighbors, and those that have are waiting for the rest of the world to catch up, but have to be ready to fend off attacks in the interim.