[Christopher]

"In a war of words between worlds
About what is wrong
About what is righteous"

These lyrics are the most telling part of the song regarding Stevies' position/opinion about these wars. Additionally, one can be of the Democratic, Republican or even Libertarian party and be for or against these wars - Party affiliation is not nessicarilay mutually exclusive to ones position on matters of war.
It's total conjecture to infer from Stevie's compassionate support of the troops & "Soldier's Angel" Stevies' political party leanings. Though IMO I think Stevie leans to the left, For the most part I believe Stevie to be party neutral and apolitical in general.