"Yeah, I guess the jig is up. You caught us and we did it"?
That's crazy. Of course they are going to act "outraged" and call Carla "a liar"! What else can they do?
But they are not going to be able to get the stink of this off of them either, unless there is an investigation and they are cleared -- even then, the accusation alone by someone like del Ponte (known NOT to be sympathetic to the Serbs)is devastating for them.
There was an article about this in the Wall Street Journal, albeit towards the opinion section but there none the less.