Democratic presidential contender John Kerry sought to focus on pocketbook issues in key battleground states, but found himself pressed to back up his claim that his campaign has the backing of foreign leaders. Kerry declined to name any leaders who have voiced support for his candidacy, but said it's clear to even casual observers of foreign policy issues that this country's standing has sagged internationally. "I'm not going to betray a private conversation with anybody," he said Sunday. "I have heard from people, foreign leaders elsewhere in the world who don't appreciate the Bush administration and would love to see...