Doesn't matter. Nowadays, with aerial refueling and proper mission planning, its possible. Who wants to destroy China's entire industry? Who wants to waste bombs and missiles on cheap battery and ipod rip-off making factories, and the ones making toys? Strategic bombers are not needed nowadays, as Israel demontrated during Osirak. They did not have strategic bombers, but they penetrated the best AD in the ME with the proper mission planning and coordination.