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Pentaerythritol tetranitrate

Security experts are trying to stay a step ahead of Yemen’s bomb-makers

Conflict & Justice

The al-Qaeda affiliate in Yemen has created bombs that have successfully evaded airport security at least three times. In the security biz, they are known as “artfully concealed devices.”

Yemeni bombmaker may be key to understanding latest underwear bomb

Global Politics
The World

Intelligence and flight security in 2009

Conflict & Justice
The World

Why is PETN the terrorist tool of choice?

Environment
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