Should the US invade Somalia with the help of Russia and NATO and blow those pirate pieces of crap up?

No. It would be a disaster, it would make Iraq look like a piece of cake. They have had no real government in many years, so we would be stuck appointing one of their warlords to run the place, and they would have no interest in a Constitutional democracy because the warlord would have less power that way. They are an outlaw nation.