Death to NATO

They don't. But the Colombian far right and Colombian cartels see an advantage in sending people over to receive military training in modern weaponry and combat experience.

Most of the mercs don't go there because they love Ukraine. They either do it for money, because they come from poor countries and the Kiev regime's international recruitment ads promise an easy way to make a lot of money. Or they do it because they have some sort of fascist ideological sympathy or a grudge against Russia, either generational or inculcated by the media's propaganda in their own countries.