I am not sure I am following you, you want to do a stretched cluster across countries but without a stretched license (Enterprise is required)? Or do you want to create 6 clusters, 1 cluster per country, and manage them from 1 location?
Keep in mind, you need to be able to hit 5ms RTT between the locations first of all. Secondly, a stretched cluster can only be between 2 locations (data) and requires a 3rd location as Witness.
Depping, many thx reply. BTW, if this is not stretched cluster, any VMWare VSAN technology could satisfy requests for 6 sites? yes..if supported the requests, we can also propose to create 6 clusters, 1 cluster per country, and manage them from 1 location. That means 1 Cluster need replicate at least another site cluster, not overlapped. can do that?