According to the Information Office of the Islamic Jihad a delegation headed by Deputy Secretary-General Ziad Al-Nakhla and members of the Political Bureau, Dr. Mohammad Hindi and Dr. Anwar Abu Taha are expect to travel to Moscow to meet the Russian diplomats.
I don't know if this is the first time this has happened, but any country to give official recognition to an Islamist jihadist terror group is most definitely a bad idea.
Even though Russia was fighting ISIS, it appears that the Russians consider some jihadists to be OK.
Israel should formally ask for an explanation.