The case numbers coming out of Israel show their (still ongoing) vaccination effort is on the precipice of eliminating it locally. So it seems incredibly reasonable it will be eliminated, at least from the developed world. From that point any reintroduction of the virus is unlikely to gain a foothold.
As I said, it can't get a foothold. If vaccinations are enough to keep the r0 below 1, which seems to be the case, it doesn't really matter how many infected people enter because it will fizzle out again. Vaccines are also likely to be mandatory for anyone traveling.
