Samantha is a doctor who has volunteered to serve in some of the worst places in the world. Where she has seen how cheap small arms are being used by child solders to kill innocent civilians, many of them women and children.
She is not trying to eliminate them, but only keep them under control. This led me to look at the Arms Trade Treaty in Wikipedia. The US has signed this, but not ratified it. And is not likely to do so. Americans love their guns, and don’t want them regulated.
They also like to sell them to other countries, because this trade is so profitable.
I am fortunate to live in rural Costa Rica, where guns are rare. And I don’t miss them.