The Italian - throws the cup, breaks it, and walks away in a fit of rage.
The German - carefully washes the cup, sterilizes it and makes a new cup of coffee.
The Frenchman - takes out the fly, and drinks the coffee.
The Chinese - eats the fly and throws away the coffee.
The Russian - Drinks the coffee with the fly, since it was extra with no charge.
The Israeli - sells the coffee to the Frenchman, the fly to the Chinese, makes a cup of tea for himself and uses the extra money to invent a device that prevents flies from falling into cups.
The Palestinian - blames the Israeli for the fly falling in his cup, protests the act of aggression to the UN, takes a loan from the European Union to buy a new cup of coffee, uses the money to purchase explosives and then blows up the coffee house where the Italian, the Frenchman, the Chinese, the German and the Russian are all trying to explain to the Israeli that he should give away his cup of tea to the Palestinian.