WASHINGTON (AP) — Senior U.S. officials and lawmakers butted heads Wednesday over the American response to Iraq’s expanding Sunni insurgency, with Republicans saying drone strikes should have been authorized months ago and even Democrats questioning the Obama administration’s commitment to holding the fractured country together.

Testifying before the House Foreign Affairs Committee, the State Department’s Brett McGurk and Defense Department’s Elissa Slotkin said the administration was focused on improving U.S. intelligence, securing American personnel and property, guiding Iraq toward a new, more inclusive government and helping its forces strike back against the al-Qaida offshoot that has seized much of the country.