Dear Alexander Lukashenko,
Since you wanted the drama to take place here and kicked me out of the internal chat, I will just copy-paste what I wrote:
"We all want to have a cool and fun tournament and we all appreciate the fact you take the time to host such tournament. But I personally think the way you behave now with those rules is just a bit weird. If one team (UK) clearly points out they won't be able to bring 15, what's the problem against just setting the rule to a minimum of 12. I don't think the number 15 being 'the heart of tournament' as you said is a legit argument...."