Music - opera particularly - is a process which is endurable or successful only if it is achieved by people who love to collaborate.
If you compromise what you're trying to do just a little bit, you'll end up compromising a little more the next day or the next week, and when you lift your head you're suddenly really far away from where you're trying to go.
Clearly it is better that, when someone is wanted by the international police, and this person travels, and a country knows about it, that country reports the fact.