[Kerry was just posturing for the Kossacks. He knew there'd be no filibuster; Reid had already said so.]
But the Kossacks are so upset that they are tearing him and each other apart for this.
The Kossacks are yelling "He thinks we're a cheap date. He knew he could just call this one in from the ski slopes and earn some brownie points with us, even though Reid already told him it was no use."
But guess what: The Kossacks ARE a cheap date for a Massachusetts senator.
The Kos Kiddies must be pitching a collective hissy fit right now.