The country should have the right to defend itself with all legal means at its command.

这个国家应该有权动用它所掌控的所有法律手段来捍卫自己。

《柯林斯英汉双解大词典》

A likely strategy will emphasize classic command of the sea, defined as the naval ability to defend vital national maritime interests.

一个很可能的战略就是强调传统的制海权，以是否能保护国家海洋利益作为评估海军能力的标准。

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America has set up its new Cyber Command both to defend its networks and devise attacks on its enemies.

ECONOMIST: The threat from the internet

In a previous position that Bishop held from May 2010 to April 2012, Bishop had access to "top secret" information on the command's efforts to defend against a ballistic missile attack from North Korea, Crutchfield said.

NPR: Judge Denies Bail In Defense Secrets Case

The U.S. Cyber Command also has more powerful tools to fight and defend against cyber attacks than does the DHS, a potential problem when time is of the essence during an attack.

CNN: U.S. won't militarize cyberspace, nominee says