Well, dear, I am not by far an expert on legal issues. You need Diogenes for that.
However, and others please correct me if/when I go wrong here...
Self defense: are you needing to know the allowances for assault or that which leads to death? If death results and the defense is 'self-defense', I would think: overwhelming odds? (ganged up on), probably being confronted with superior weaponry (i.e. - the guy had a gun, you had a knife, you managed to stab him and he dies). Gee, I'm not much help here.
Justification of war - you might want to try a government site for that. Each country probably has its own justifications for declaring war.
As far as confiscation of property: from working for a defense attorney for a short time, again - Dio would know better...there's "probable cause" and they also take it for "evidenciary" purposes.
Sorry if this doesn't help much. I'll try to dig up Dio and get him to answer this.
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The day we stop learning is the day we start dying!(c)
Owner/operator of the Evil Petting Zoo and devout member of the HADB clan.
Mage extraordinair.
Commander of the Dragon Fleet, IW Peacekeeping Force
Occasional subjugate to Gwhanos the Fluffy
Hopeless Romantic *sigh*
"Allright! We'll call it a draw."