Personally, my advice to people who want to travel to another country is, wait until we are at war with them and then join the Army. You will be able to see the country with a large gun in your hands and with the support of lots of heavily armed buddies.
Otherwise, it is best to stay in US territory where everything is civilized. There's nothing in the rest of the world that we don't have here in the US. Want to go to a beach in the winter? Go to Miami, or Key West, or Honolulu, or American Samoa.
If you really want to vacation in the Caribbean, go to Puerto Rico.
The goal of self defense is not to kill. It is only to eliminate threats.
Consider these two scenarios:
"Someone shoots an attacker in self defense. The bad guy is fatally wounded. But before dying, the bad guy goes on to fatally stab the defender to death."
In this case, the defensive shooting resulted in the death of the attacker. But it was not a successful case of self defense.
"Someone shoots an attacker in self defense. The attacker stops their attack and surrenders. The attacker is later convicted of assault and battery."
In this case, no death at all occurred. Yet the defensive shooting was 100% a success.
Death is a possible unintended result of a defensive shooting, but it is not the goal.