What are the main problems that may arise if all countries close (or almost close) their borders for 1-2 years or more?
Fortunately, it cannot be said that some kind of isolation is felt now, because we can easily call (Skype) a person who lives in another country.
But what problems can arise?
The Global economy relies a lot at exports.
And the tourism industry is one of those that are going to suffer the most if the borders are going to close. 1-2 years are already too much. There are so many countries that have a huge portion of their GDP based on the tourism sector.