 An example of this would be the creation of the N-1 orbital combat rocket (GRAU index 11A52) per the Resolution of the Council of Ministers issued on 23 June 1960.With a starting weight of 2200 tons and a nuclear warhead weighing 75 tons, its estimated nuclear yield (though unknown exactly) could surpass that of a 150 megaton-yield 40 ton warhead delivered by a UR-500 missile.The development of such weapons also required mandatory and practical aerial bombardment methods as, for a high-yield (thermo-)nuclear explosion to reach maximal effect, the payload has to be detonated at an optimal height for the shock wave to reach the greatest force and range.