Dion's credibility gap

From today's Globe and Mail:

OTTAWA — Christine Stewart, who was the Liberal environment minister when Canada signed the Kyoto agreement in 1997, said none of her cabinet colleagues -- including current party leader Stéphane Dion -- supported her efforts to put a real plan in place to meet its ambitious targets.

Our current Environment Minister adds this:

Environment Minister John Baird said there is a pattern of key Liberals saying there was a lack of commitment when the Liberals signed Kyoto. "Dion has a huge credibility gap and he has created it himself," Mr. Baird said in a telephone interview.

Baird might be referring to this.