One theory floating around is that France doesn't want Iraq conquered by the US because of what we'll find in the files concerning France's not completely appropriate interactions with the current regime in Iraq. Perhaps what France should do is offer Hussein sanctuary in France in exchange for torching the files. Another motivation would be to upset the US but quite frankly I wouldn't care. Once we convert Iraq to our side, Hussein becomes irrelevant. Having him end up a smear in some bombed out bunker would be nice, but it's hardly critical to our success in this struggle.