Hamlet, act 4

I think that Claudius fears for his life by two people. Both Hamlet and Laertes wants Claudius dead. I think that Claudius is tricking Laertes. Laertes thinks that Claudius was the one who killed his father but Claudius makes a deal with Laertes to prove it was Hamlet who killed his father. Claudius makes plan with Laertes that they will kill Hamlet in two ways. One way is to prison Laertes sword and to prison Hamlet drink if the sword doesn't work. But I believe Claudius real plan is to let Hamlet Laertes kill each other in their fight so that Hamlet or Laertes will not kill him.