May 1 = communist May Day. Coincidence? Perhaps.
The death of former Russian spy, Alexander Litvinenko, last week from radioactive Polonium-210 poisoning is the latest in a series of politically motivated attacks on the outspoken opponents of Russian President Vladimir Putin.
http://www.heritage.org/Press/Commentary/ed112706a.cfm
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"Appearing alongside high-profile opponents of President Putin, he [Alexander Litvinenko] has continued to make allegations about his former bosses. Perhaps most notably, he alleged that al-Qaeda number two Ayman al-Zawahiri was trained by the FSB in Dagestan in the years before 9/11".