First of all, it's not being ruthless it is about being genuine, it is about the real intentions, it is about being serious, it is about having the will. The United States doesn't have the will to defeat the terrorists. It has the will to control them and to use them as "the cards", as they did in Afghanistan that would be reflected of military aspects for the issue, if you want to compare more than a hundred and twenty or thirty Russian airstrikes to few areas in Syrian compare to ten or twelve American allies' airstrike in Syria and Iraq, it means militarily nothing! but that military ineffectiveness is a reflection of the political will.