I don't want to get into a religious argument with an expert like soontobe, so it is just as well that she has said her last say on this, but a "neighbour" doesn't have to be of one's own country - he can be a stranger, even one who is generally considered an alien and a potential threat. The Samaritans were foreigners and of a different religion and different politics.
" But he wanted to justify himself, so he asked Jesus, “And who is my neighbour?”
In reply Jesus said: “A man was going down from Jerusalem to Jericho, when he was attacked by robbers. They stripped him of his clothes, beat him and went away, leaving him half dead.
A priest happened to be going down the same road, and when he saw the man, he passed by on the other side.
So too, a Levite, when he came to the place and saw him, passed by on the other side.
But a Samaritan, as he traveled, came where the man was; and when he saw him, he took pity on him.
He went to him and bandaged his wounds, pouring on oil and wine. Then he put the man on his own donkey, brought him to an inn and took care of him.
The next day he took out two denarii and gave them to the innkeeper. ‘Look after him,’ he said, ‘and when I return, I will reimburse you for any extra expense you may have.’
“Which of these three do you think was a neighbour to the man who fell into the hands of robbers?”