Which principle of airpower pertains to focusing resources on key efforts?

The principle of airpower that pertains to focusing resources on key efforts is Priority. This principle emphasizes the importance of directing available resources and efforts toward the most critical objectives that will achieve the desired effects in military operations. By establishing priorities, airpower can leverage its capabilities most effectively, concentrating on areas where it can have the greatest impact, thereby maximizing the overall effectiveness of air operations. This focus ensures that critical targets are addressed promptly and efficiently, which is vital for mission success.

In contrast, other principles such as Balance address the need for a well-rounded approach to air operations, ensuring that capabilities are harmonized across different domains. Synergistic effects refer to the idea that the collective impact of coordinated actions is greater than the sum of individual efforts. Lastly, Flexibility and Versatility highlight the ability of airpower to adapt to changing situations and missions. While all these principles are important in the execution of airpower, Priority specifically underscores the need to concentrate efforts where they will be most beneficial, ultimately leading to successful outcomes in military campaigns.