This finally broke the Soviet defenses and allowed the Poles to advance.

He emphasized the importance of the region's ports and communications lines for Soviet defense, saying, "Our security lies here."

The systems are designed to allow the bomber to get past Soviet defenses that either existed or were foreseen five years ago.

Pravda suggested that Donald did considerable damage to Soviet defense and security.

Only rarely could the United States attack breach the Soviet defense.

The new Soviet defense relies on armor, like chain mail, hung over the top and sides of a tank.

However, this offensive had only limited tank support and was forced to assault extensive Soviet defenses.

Building a craft that could fly high enough to evade Soviet defenses was a considerable challenge.

"There is no question that if you run these things against Soviet anti-air defenses," he said, "then you'd have a serious shortfall in capability."

The Soviet defenses could be cracked here, tonight, or tomorrow.