In Allied Force, which factor helped persuade Serbia to surrender?

• A. Presence of ground troops outside the border
• B. Overwhelming air power alone
• C. A major ground offensive within Serbia
• D. Sanctions and economic pressure only

Answer: (A)

The main idea this item tests is how coercive leverage works in a modern air campaign. NATO’s Allied Force used intense air strikes to degrade Serbia’s military capabilities, but the decisive push came from a credible threat of ground intervention. Ground troops stationed near Serbia’s borders—particularly in Kosovo and surrounding areas—made it clear that the alliance could escalate beyond air power if Serbia refused to back down. That looming possibility raised the costs of continuing the fight for Milošević and made him recognize that retaining Kosovo through force was unlikely.

Air power was essential, but it wasn’t the sole lever; there wasn’t a major ground offensive launched into Serbia during Allied Force, and sanctions and economic pressure, while influential in the broader pressure, didn’t by themselves force surrender. The combination of sustained air campaigns with the credible threat of a ground invasion near Serbia’s borders ultimately tipped the decision toward withdrawal.