President Barack Obama has presided over billions spent battling the Islamic State, despite, by his own admission, lacking a clear and complete strategy to defeat the terror group. The war against Islamic State has cost a total of $2.91 billion, averaging $9.2 million per day, according to the Pentagon. The Hill reports that more than 50 percent of the cost is directly tied to airstrikes. In Syria, a $500 million program to train and equip rebels against Islamic State is stagnant. Secretary of Defense Ash Carter admitted the program has only produced 60 Syrian trainees, attributing it to a strict vetting process.