World: YUGOSLAVIA: In Case of Attack. . .

We have nurtured our sovereignty with the blood of our people, and no one is going to take it away from us.

—Marshal Josip Broz Tito

WITH those defiant words, Yugoslavia's President recently reiterated his country's determination to remain free and independent. As the East bloc's original heretic, who broke with Moscow in 1948, Tito is concerned that the Soviets, having acted to quash a much more recent heresy in Czechoslovakia, may also move against him.

The Russians have given him some reason to worry in the form of bitter propaganda attacks by the...