At first, the plans had assumed an eastern limit at the "A-A line", a notional boundary running along the Volga river between the two cities of Archangelsk and Astrakhan. Since it was expected well-ahead of the operation that the Soviet Union would in all likelihood not be totally defeated by military means despite being reduced to a rump state, aerial bombardments were to be carried out — despite the near-total lack of a strategic bomber design in the Luftwaffe's arsenal with which to perform such raids — against the remaining enemy industrial centers further to the east.