The best defense is to attack.

进攻是最好的防御。

《新英汉大辞典》

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The Interior and Defense ministries said that the Tunisian government has closed its two border crossings with Libya because of the attack.

突尼斯内政部和国防部表示，由于这次袭击的影响，突尼斯政府已经关闭了与利比亚之间的两个边境口岸。

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The survey supports this observation, in that 92 percent of respondents agree that self-defense, in order to interrupt an in-progress attack, is a necessity.

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"The defense force -- sometimes they attack, " Sharp says.

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U.S. military analysts figured out during the early days of the Cold War that no effective defense against a large-scale nuclear attack was likely to be feasible.

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