What I DO oppose is the poorly regulated sale of weapons to private citizens whose sole purpose is to kill a lot of people very fast. (religion.blogs.cnn.com)
But Western nations have largely held back from more direct involvement in the conflict, including sales of weapons and equipment because of the Nigerian army's poor human rights record. (punchng.com)
The latest (but not recent) episode I remember is this vote from June 2016, when the US senate rejected restrictions on sale of weapons to people on the terror watch list. (politics.stackexchange.com)