If, like me, you take more than a passing interest in the security situation in Beirut, you might have set aside some time this evening. For that’s when BBC World documentary series, “Murder in Beirut”, was due to be screened. It was going to deliver shocking truths regarding Hariri’s assassination. More than that, though, it was going to tell us what a lot here already know – or think they know: Hizbullah killed the premier. At least it was, if we believe Al-Akhbar’s front page on Monday. The decision to shelve the production, given Lebanon is currently at any time 60 seconds from disaster, has raised eyebrows along with anticipation to see the finished product. “Murder in Beirut” was officially withheld in order for…