but the signature is the same ) . U.S. strikes ISIS targets in Iraq to stem the group 's spread . Douglas Ollivant : Air power can be very potent when used properly . The United States has been using air power for years, and it is a key part of its strategy against ISIS. Ollivant : Air power often fails to dislodge forces from defensive positions .
U.S. strikes ISIS targets in Iraq to stem the group 's spread . Douglas Ollivant : Air power can be very potent when used properly . The United States has been using air power for years, and it is a key part of its strategy against ISIS. Ollivant : Air power often fails to dislodge forces from defensive positions .