As the U.S. continues efforts to curb violence in Iraq, it has turned its sights on the border with Iran.
In response to fighters and weapons crossing into Iraq, the U.S. has implemented a high-tech dragnet.
To get into Iraq, military-age men are subject to a scan, and U.S. officials keep records of their irises and fingerprints.
Ernesto Londoño of The Washington Post discusses the effectiveness of the new program given the scope of weapons smuggling and the vastness of the border — which is nearly 2,300 miles long.
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