Search it up on google you should find a lot
You need a time period to be entered here because the Maximum Land area
(million Km to the power of 2) list the British Empire as 35.5 to the power of 3, while the Soviets only have a 22 or so. According to this information, the British Empire is larger in land mass than the Soviet Union. Again, we need a time period for an accurate answer.
I believe it is "They believed the enemy would invade them next" because if they invaded North Korea, most countries that were invaded go to the allies to weaken defenses, trade, and rations.