Other researchers are studying bee venom's possible effectiveness as a treatment for arthritis.

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Diskin, a widely respected former security official, also took the two Israeli leaders to task for mis-characterizing the possible effectiveness of a military strike against Iran and its nuclear program.

CNN: Former Israeli security chief slams handling of Iran

But Muralitharan remains the biggest threat to the tourists, who have been looking at possible ways of countering his effectiveness.

BBC: Spin is key for Sri Lanka