1.7 billion went to the Free Syrian Army. the FSA largest and strongest wing was Al-Nusra Front or Al Quada in Syria. Which had connections with ISIS. We gave the FSA those Toyota Trucks as an example. The person we gave them to immediately had them driven to a location for ISIS to pick them up.
Obama sent money went through Qatar which is a known supporter of ISIS.
Trump shut off the money supply In March 2017 soon after ISIS started falling apart.