Leagues are commonly made for mutual defense.

结成联盟往往是为了共同防御。

《新英汉大辞典》

S. They signed The Mutual Defense Treaty in1954.

1954年美台签订了共同防御条约。

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Last week, U. s. Secretary of State Hillary Rodham Clinton said the U. s. would honor its mutual defense treaty with its ally, the Philippines.

上星期美国国务卿希拉里·克林顿说美国切实履行与菲律宾盟国的共同防御条约。

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Syria perhaps rises to the level of rook, since it is a nation-state and has a mutual defense treaty with Iran.

CENTERFORSECURITYPOLICY: Next Steps in the Iran Crisis

Aside from expanding our relations with ASEAN nations, we should start by building on our Mutual Defense Treaty with the Philippines.

CENTERFORSECURITYPOLICY: Enter the dragon

"It's well known that the United States and Japan have a mutual defense treaty, " a defense official said of Panetta's exchange in Beijing.

CENTERFORSECURITYPOLICY: Center For Security Policy