On September 19th 1972 a letter-bomb in London killed Ami Shachori, an Israeli diplomat. Almost all the 51 similar bombs posted to Israeli embassy employees around the world were intercepted.

在伦敦，1972年9月19日，一名以色列外交官Ami Shachori死于信封炸弹，另有约51枚列斯炸弹寄往世界各地的以色列大使馆工作人员，几乎全部被截获。

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"The uncomfortable reality of our world today is that bits and bytes can be as threatening as bullets and bombs, " Dempsey said in a letter Wednesday to Sen.

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The letter was drafted by Hans Bethe, who headed the group that designed the world's first nuclear bombs and who has served as a senior adviser to previous presidents on nuclear and anti-ballistic missile issues.

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These weapons are designated with the letter "B" followed by the number of the physics package they contain, such as the B61 family of bombs.

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