Eh, there's no way that Rumsfeld memo is "How to start a war". Note that the first reason depends on Saddam attacking the Kurds - not very actionable for the US!
It literally says "How start", but does not literally say "how to start". "How start" could also be "How [would it] start". Don't let MSNBC do your thinking for you!
>Arming and supporting the Kurds to conduct instigating attacks or incursions is just one way.
Then it would have said something like: "Kurds provoke", not "Saddam attacks". In any event, we wouldn't have stepped in just based on a Kurd attack. The response would still be dependent upon Saddam.