RALPH:  Hamlet has successfully tricked Claudius into revealing his guilt; but on the other hand, Claudius is now aware that Hamlet is on to him.

SARAH:  Claudius knows he has to act quickly, and at the same time make his actions look justifiable to the rest of the court.

RALPH:  Claudius comes up with the idea of sending Hamlet away, to England; Rosencranz and Guildenstern will escort him there to make sure he doesn’t squirm out of it.