wars can be just to give an example the republican fight against Franco during the Spanish civil war was a just fight (admittedly they cocked it up so badly (dam those pesky Stalinists)). World War Two was also a just fight to a certain point, its effect was good (end of Hitler and co) but the reasons for getting into it not so good (now if we'd gone in when they re-occupied the rhine land or took over austria or when they did chekislovakia (if you haven't noticed I can't spell worth a dam) then we'd have had a legal excuse to go and crush his lot).
most wars have definitely not been just fights, WWI, Kosovo, Iraq, Malaysia, Vietnam, Chechnya, Angola, Grenada, the iraq-iran war, the yugoslavian civil war, somalia, abysinia, afganistan (however many times its been now), etc, etc.
A just war is one that is fought for reasons other then the fact it benefits the rulers of the nations involved (obviously these have to be good reasons i.e. them being fascists or shelling over your border unprovoked something like that, rather then they have a resource you want or are doing something that disadvantages your nation economically)
The current Iraq war is a farce, Iraq had nothing to do with september the 11th attack and was a highly secular country (in fact osama bin ladin begged the US to let his forces attack saddam during the first gulf war) they didn't have WMD's (all the ones we had sold to them had gone off by this point and they wern't able to build their own) and their military had been screwed by the sanctions. The war was about oil (not for supply to the US directly but it still benefits those in control there) and now foreign oil companies are looting the oil wealth of Iraq (contracts now being agreed give profits of 60-99% compared to the normal level of 15%). Anyone who says that Iraq is about humanitarian intervention is either an ill informed idiot or a liar, sanctions and the actions of the occupying forces have killed many more Iraqis then sadam ever could have. Anyone who says that its to stop the Kurds or marsh arabs from being attacked is also ill informed or a liar as what sadam has done to them Turkey is doing just as bad over the border to the Kurds and the Armenians. To say its to stop sectarian violance why is it that it is mainly forces backed by the occupying forces that commit these acts and when local people form organisations to protect themselves they get attacked by coalition forces, there has even been direct evidence that coalition forces are directly fanning the flames of religious hatred (a number of british special forces soldiers wearing the garb of members of the mehdi army were arrested for possesing bomb making equipment by Iraqi police, after the first attempt to release them was prevented by the local inhabitants the army returned later that night and drove an IFV through the police station killing several police officers) also it must be noted that the mehdi army's leader muctader al sader (might have spelt that wrong I can't remember how its spelt so i've done in phenetically) has called for unity between the resistance to throw the occupying forces out to make Iraq a place for Iraqi's regardless of religion and that the mehdi army is now working with other resistance groups to drive out al quaida and the US (its ironic that the reason for this is the fact that the US locked up some high ups in various resistance groups together regardless of religion and so promoted this newfound unity).
In afganistan now people are flocking to the taliban on the grounds that they are standing up to the nato forces unlike almost all other groups in afganistan.
I hate Bush but I hate Kerry, Clinton and all the others, the democrats are just as bad as the republicans (as one person put it to me recently both of them are screwing us up the ass the only difference is the democrats use lube).