While viewing videos from one personal that has been to every country he mentioned that it was easier for him to see new countries because the airport close to him had so many flights to other countries. This made me curious:
Which airport has direct (non-stop) passenger flights to the most other countries and how many?
Although it makes only a difference of one, let's exclude domestic flights for the case where an airport also serves as domestic airport. Flights must be regularly scheduled, although they can be seasonal, and available to book for individual passengers, to exclude chartering an airline and private flights.
Bonus Question: Same but for a group of airports serving a single metropolitan area? Which metropolitan area has airports with direct flights to the most countries? In terms of selecting a home base to visit many countries, this could arguably be a more useful metric.