General Yazov, the Defense Minister of Soviet Union, ordered the 40th Army to violate the agreement with Ahmed Shah Masood, who commanded a large force in the Panjshir Valley, and attack his relaxed and exposed forces. The Soviet attack was initiated to protect Najibullah, who did not have a cease fire in effect with Masood, and who rightly feared an offensive by Masood's forces after the Soviet withdrawal. General Gromov, the 40th Army Commander, objected to the operation, but reluctantly obeyed the order. "Typhoon" began on January 23 and continued for three days. To minimize their own losses the Soviets abstained from close-range fight, instead they used long-range artillery, surface-to-surface and air-to-surface missiles. Numerous civilian casualties were reported. Masood had not threatened the withdrawal to this point, and did not attack Soviet forces after they breached the agreement. Overall, the Soviet attack represented a defeat for Masood's forces, who lost 600 fighters killed and wounded.