Former President George W Bush says he "absolutely" agrees with President Obama's goal to degrade and defeat ISIS.
Senator Dick Durbin (D-IL) says committing U.S. ground troops in Syria would be a 'serious mistake.'
Sen. Ted Cruz tells Candy Crowley "the approach of the Obama administration to ISIS has been fundamentally unserious."
Sen. Bernie Sanders says the fight against ISIS needs to be an international effort and highlights the importance of more action from the Arab and Muslim world.
Sen. Bernie Sanders says other countries haven't stepped up because they believe that "American taxpayers are gonna do it."
Will U.S. ground forces will be necessary in order to destroy ISIS? Sen. Jack Reed on the U.S. role in the fight.
Sen. Lindsey Graham (R-SC) says U.S. ground troops are needed to fight the terror group because "aerial bombardment" alone will not "destroy ISIL."
Sen. Chris Murphy, (D) has been critical of Pres Obama's ISIS strategy in Syria and is against arming the rebels.
"We need a realistic political strategy," says Sen. Chris Murphy (D) and adds that we don't "have that today in Syria."