Before we start invading countries left right and center i think we need to deal with afghanistan and iraq first. Get those countries back on track, prove to the world that the invasions were the right thing to do, make life bettter for the inhabitants.
Because whats the point of invading iran when we're gonna get the same situation, maybe better, maybe a whole lot worse. If Iran does have WMD and does have the intent to use them directly or undirectly and there is conclusive proof that this is the case then by all means bomb the buggery out of them.
Lets not have another situation where we declare a country of possessing wmd, then invading them, finding bugger all wmd and left facing a country which is not too peaceful to say the least.
Get iraq and afghanistan sorted before any more ventures, to do this lets give the lads on the ground as much support as possible and get some more dialogue with the insurgents