after setting up a committee to study the implications of new weapons, received a recommendation to use the atomic bomb as soon as possible. The committee concluded that no technical demonstration would effectively end the war, and therefore, it was necessary to use the bomb against an enemy target without specific warning to demonstrate its devastating strength. Thus, the main idea is the justification for the decision to use the atomic bomb.

pharaphrase this

The main idea is that the committee established to analyze the consequences of new weaponry ultimately recommended the immediate utilization of the atomic bomb. They determined that a demonstration of its power would be ineffective in ceasing the war and concluded that it was necessary to deploy the bomb without prior warning to exhibit its destructive capabilities. Therefore, the justification for the decision to use the atomic bomb is underscored.