Electronic authorization entitles you to a single entry into the country. If you are going to visit other countries while in Mexico, we recommend that you issue a consular visa.

If the return flight to Moscow will be from Havana, then - yes. If you want to fly to Cuba and then come back to Mexico again - only multivisa Mexico will help.

Electronic authorization allows single entry into the country. Although, of course, there is an option to fly to Cuba and obtain another electronic permission - in this case you can return to Mexico without problems. If you want to be absolutely sure and do not think about issuing a second electronic permit then - a visa.