We cannot prove who assassinated Lokman Slim, the prominent and vocal Hezbollah critic and political activist, on the morning of 4 February. But there are some things we can be sure of.
We know that Slim was shot several times in the head in the south of Lebanon, having disappeared the night before. We know that he had received death threats from Hezbollah supporters, who accused him of treason. We know that the south of Lebanon is under the control of Hezbollah, and one cannot do much there without the knowledge of the powerful Shiite party.
We also know that in Lebanon, not all culprits try to conceal their identities.