I have a question regarding wartime bonus income, and this particular situation is more likely to happen with Japan rather than other countries. If Japan is only at war with France, it does collect wartime bonus income as France is considered a Major Power, but what happen if France surrenders, becoming a minor power? Does Japan continue to collect the bonus incomes or not?
In other words, does the once in " Once at war with a major power" have to be understand as “from the time you were at war at least 1 turn with a Major Power” or " as long as you are at war with a Major Power"
Thank you for your answers.