I've been trying, but I can't see how Nepal, whether it goes commie or not, important to the national security of the US. It's hardly what you would call strategically located.
It's sandwiched between the two most populous countries in the world, both of which are becoming more powerful all the time. It is isolated from China by the highest mountains in the world and from India by flat land. Seems like Nepal is, and should be, India's concern, not ours.
True, India should be concerned, but they seem to be more interested in interfering with Nepal's internal politics than with their own national security.
India's lost Nepal already, seems like. Its like the US 'losing' Canada, I guess. Whatever you do, whatever your best intentions, you're way too big to ever be popular there.