The founding of north korea predates the founding of communist china. And it's more like china helped north korea and vietnam defend themselves against invasion

The founding of north korea predates the founding of communist china. And it's more like china helped north korea and vietnam defend themselves against invasion rather than help create them. > Perhaps just to make some money or befriend the neighbors. Russia sells its technology to anyone who wants it. Why wouldn't china? That's not the OP was talking about was it.