In negotiations, the greatest taboo is "dodging the topic," especially when it concerns core interests at international conferences.
Some say the essence of diplomacy is verbal sparring, and rather than saying things everyone can understand, it's better to tailor words so only the discerning can grasp them to avoid unnecessary trouble.
Ordinarily, or strictly from the perspective of a "spokesperson for the Ministry of Foreign Affairs," this approach isn't wrong. But in this moment, at a joint conference attended by global powers, as the monarch of a country, whether it's avoiding questions, skirting the issue, or forcibly dodging a question posed by another nation's leader based on duty and principles... regardless of the quality of the question itself, spreading such behavior would always leave an unpleasant impression.