The Russian-made S-400 defence system was used to neutralise the 15 missiles Pakistan fired at Indian cities late last night and early this morning, and Israeli HARPY drones were then deployed to disable Pak air defence radars, including one in Lahore, sources said Thursday. Sources told news agency ANI the Air Force fired the S-400 system at 'moving targets' heading towards India last night, and that these targets were successfully neutralised.