You guys got to be the most idiotic, ridiculous people I've ever seen. You guys lacked intellect common sense to decide your opinion based on this situation.

You guys have to understand that Vietnam made it clear that they are a drug free country. If you are staying in Vietnam, you must follow their rules. If you know their rules but choose to evade then don't expect no consequences for your action.
I also believe death penalty for drug use are too harsh but the Vietnamese wanted to be that way so let's try to respect them and their country by following the rules.
This have nothing to do with discrimination, tons of Vietnamese citizens are being executed for drug related crimes.
And how is he going to heaven for getting involve with drugs. I'm pretty sure God wants stoner in heaven. I'm also sure there is no God. 

Finally Nigerian government can't do anything. You cannot convince them to cancel the capital punishment. Human rights in Vietnam is bad already so no point of negotiating.