Doesnt that dpeend on what you term as national interest?
Is it in our national interest to make an enemy of the Taliban? Of Gadaffi?
What puts our population in jeapordy? Going to war in these countries, or leaving them well alone? For me the answer is pretty obvious. If you mean to protect oil reserves then maybe but if you removed the amount of oil we used getting to and from Iraq, Afganistan, and Libya plus the number of lives that have been lost and the cost of all the weaponry and instead pumped that back into the country, it sounds crazy i know, but would we have sustained as many deaths and casualties?
It doesn't really matter what you or I decide is in our national interest, we rarely have enough information to make a proper defined decision.
The reasons for War in Iraq and Afghanistan are not the same and although referred to by the Bush Administration as the War on Terror, only really Afghanistan deserved that title.
The single issue of training camps and safe haven for al-Qaeda and related organisations in Afghanistan, supported by a regime with influence within the Army and Govt of a nuclear power in Pakistan is reason enough to do something about it.
There is no denying that allowing terrorist groups such as al-Qaeda the resources and stability of having a region in which they can freely operate is contrary to our national interest.
Iraq, again in this thread already I put forward the argument that aside from what he was doing to his own people, he was a threat to the regions stability, simply by his rhetoric against his neighbours and subjugation of Shia and Kurdish populations, along with his insinuation of weapons he didn't possess and refuse to co-operate fully with UN resolutions he contributed to his own demise.
As we have seen in the numerous threads on this subject, people will disagree and put forward that Hussein was no real risk and so on, however I posit that in a region as volatile as the Middle East, words are sometimes as damaging as or worse than actions, and Hussein was always the one for explosive and provocative rhetoric.
That is aside form energy security and the need to stop Iran or the Russian Federation from ultimately influencing and controlling Iraq when Hussein eventually fell from power, which was becoming more and more likely.
Our main problem with the Iraqi invasion, was not the invasion itself, but the utter stupidity of the Bush Administration in how they dealt with the aftermath, disbanding the Iraqi Army and not re-tasking them for security under a real Iraqi interim Government for a start.