According to testimony to a Grand Jury, President Bush actually gave orders that the name of a CIA operative be leaked in order to punish her husband, who criticised the invasion of Iraq. So it’s not simply a matter of blaming the Vice-President: this is Bush himself.
It’s odd that Clinton got into so much trouble for a cigar, while Bush gets away with leaking classified information relating to the security of his country for revenge purposes, don’t you think?
PS: The Wikipedia is glorious for getting background and the full story on current news events. It also (generally) provides good links to sources. Traditional media, on the other hand, only rarely really provide background coverage – they’re meant to be thrown out or never listened to again, after all, so there’s little point. Except now they’re online there would be a point. Here’s Wikipedia’s stories on this scandal.