There are two places so far (and only two countries) that have effectively stopped the growth the disease after it had made it on their shores.
They are Singapore and Hong Kong.
Both have warm temperatures (which some argues makes a difference), have tight control over travel (incoming and outgoing), and took the virus _very_ seriously from day one.
Could their success be duplicated elsewhere? Hard to say.
But—no western government is even _asking_ the question, much less attempting to answer it.
Good evening - you forgot Taiwan. They have done an amazing job.