Their relationship is hardly described, they don't appear together in the webcomic very often. So it's unlikely that they hate each other.
At points their relation can shown to have very tense moments. Though this would be very true, in real life Russia and the U.S.A are not fond of each other, though after the Cold War we are on "good terms". WonderfulAsia 22:52, September 21, 2010 (UTC)