What was the meaning of that phone call? Victor Laszlo is on that plane. Why do you stand...

Major Strasser:
[arriving too late to stop Victor Laszlo from escaping]
What was the meaning of that phone call?
Captain Renault:
[pointing to the plane]
Victor Laszlo is on that plane.
Major Strasser:
[after looking at the plane]
Why do you stand here? Why don't you stop him?
Captain Renault:
Ask Monsieur Rick.
Rick:
[sees Strasser begin to move toward the telephone, and draws a gun]
Get away from that phone!
Major Strasser:
I would advise you not to interfere.
Rick:
I was willing to shoot Captain Renault and I'm willing to shoot you.
Major Strasser:
[picks up the telephone]
Hello?
Rick:
Put that phone down!
Major Strasser:
Get me the radio tower.
Rick:
PUT IT DOWN!
[Strasser draws a gun, he and Rick both fire simultaneously, Strasser falls mortally wounded, shortly afterward, some police arrive on the scene]

Captain Renault:
Major Strasser has been shot.
[Renault looks at Rick, Rick gives him a look]

Captain Renault:
Round up the usual suspects.
[the police pick up Major Strasser's body and leave, Renault looks over at Rick, who is smiling]