SkyWatchTV News 5/5/16: Who's Fighting Who in Syria?

Documents obtained by Sky News from ISIS defectors indicate that the group has had regular and ongoing contact with the government of Bashar al-Assad -- contacts that include deals to swap oil for fertilizer and advance warning of attacks by government forces. So who is really fighting who over there -- and what are we doing? Also: ISIS threatens Hamas; US Navy seal killed by ISIS near Mosul; Kenya police foil anthrax attack; the war on cash continues; and liberals coordinate a racketeering lawsuit against climate change skeptics.