In Moscow some time ago a man was awakened in the middle of the night by a loud knock on the door.
"Who's there?" he asked.
"The postman!" came the reply.
The man got out of bed and opened the door, only to find two members of the secret police.
"Are you Liebovitch?"
"Yes."
"And did you make an application to immigrate?"
"I did."
"Don't you have enough food to eat here?"
"Yes, we do."
"Don't your children get a good education according to the principles of the party?"
"Certainly."
"Then why do you want to leave the Soviet Union?"
"I don't like the post being delivered at three in the morning ..."