"Western countries say Assad’s harsh war tactics feed the anger that allowed Islamic State to grow."...lol this is just pathetic. The growth of ISIS occurs within Saudis and Qatar with signiicant help from US and UK. Without elimination those two radical Islamic states ISIS will never stop growing. Step one, eliminating Hilary , Saudi's supporter , from getting into the power had been achieved. In few weeks the war will shift into Saudis state. There will be huge benefits to US and Russian oil producers. That would be a step two.