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The State Department's new arms-control compliance report is out, the first since 2005, and the unclassified version shows that uncertainty about biological weapons still casts a shadow over the globe. Iran, North Korea, and Syria may have germ-warfare programs, and neither China nor Russia have come completely clean about their past.

Doubts exist not only about which states may possess biological weapons programs, but also the weakness of the main international treaty outlawing them, the Biological and Toxin Weapons Convention. This treaty has never lived up to its original promise, and is badly in need of an overhaul. At the same time, beyond the diplomacy, there's also plenty of uncertainty -- and precious little information --about whether terrorists or crazed individuals...