You call that evidence?

One of two Russian airliners that crashed nearly simultaneously was brought down by a terrorist act, officials said Friday, after finding traces of explosives in the plane’s wreckage. A Web site connected to Islamic militants claimed the action was connected to Russia’s fight against Chechen separatists.

Ah, but the Russians have clearly failed to account for the probability that the traces were placed there previously as part of a dog-sniffing exercise. After all, traces of explosive were found in the wreckage of TWA 800, and we all know that that was just, um, a randomly exploding fuel tank, right?