Clark Kent can have a political stance. Superman has to be impartial and as fair and not-heavy-handed as possible.
I'm not saying he (as in Clark/Superman as the whole person) SHOULDN'T take a political stance--just that he shouldn't force his own political stance on others.
I liked SLV also, simply because he wasn't forcing the two countries to see each other's views--he was just trying to get them to talk, and then was asked to mediate those talks.
And from what I understand from the episode, they'd specifically asked for Superman or no one, BECAUSE they'd always found him impartial and as trustworthy a being they'd ever met.
"You take turns, advise and protect one another, even heal or be healed when the going gets too tough. I know! That's not a game--that's friendship!" ~Shelly Mezzanoble,
Confessions of a Part-Time Sorceress: A Girl's Guide to the Dungeons & Dragons Game Darcy\'s Place
