(ANSA-AFP) - KYIV, AUG 6 - Ukraine's President Volodymyr Zelensky will on Saturday make his first visit to Serbia since Russia's invasion, a senior Ukrainian official told AFP, highlighting the symbolic importance of the visit to Moscow's traditional ally. "We need to pull the Serbs away from Russia's side," the source said, calling Zelensky's visit to Belgrade a "slap in the face for the Russians". Zelensky -- who has toured much of the world to whip up support for Ukraine's defence against the Russian invasion -- has not visited the country since he became president in 2019. Serbia is seen as one of the most Moscow-friendly countries in Europe. (ANSA-AFP).