You guys are funny
Ofcourse its ideal to have complete energy security, I mean if given the option of relying on foreign entities for one of, if not the most, important inputs into the economy or being fully self-sufficient - I know what I'd choose.
But, its nieve to think that having full energy security at all costs is good policy: it aint. If you can get it cheaper overseas in a reasonably secure fashion, then thats the way to go, otherwise you raise the price of practically everything because it costs you more than it would otherwise to source domestically. Fortunately/unfortunately, thats just how the economy works.
The price of oil reflects three key things: cost of production, relative scarcity and transport. Sourcing domestically may reduce transport costs, but it won't do anything to relative scarcity (as in, the trade-off between supply and demand) because other producers will just cut production to keep prices up. And you are left with the cost of production which would be higher, and so you don't really gain anything other than pissing off the cartels who can really hurt your economy.
Basically, let the market do its thing. Sure, invade a couple of countries every once in a while to shore up your supply contracts, but mess with the market at your peril.