Clark hasn't been saying as much on this question as he could -- whatever he says, he will be jumped upon!-- but I note that in his official "position" he identifies strongly with the policies and vision of fellow soldier/peacemaker Yitzhak Rabin and commits himself only to what is truly a non-issue: the right of Israel (NOT the Likud party's Greater Israel) to exist.   I have also read in at least one of statements (sorry I can't give the link -- wish I could find it myself!) some very strong implied criticism of the Sharon government; he was praising the courage of isolated Israeli military commanders who opposed Israel's West Bank actions.
So I give my candidate credit for political prudence rather than pandering.   He's made no false promises, and I don't think he'll be anyone's puppet in the White House.