According to this list, Colombia has fewer drug related deaths than any of the countries you mentioned, Sierra Leone about the same as Japan and the Netherlands

According to this list, Colombia has fewer drug related deaths than any of the countries you mentioned, Sierra Leone about the same as Japan and the Netherlands is below Saudi Arabia. I can't find the source of this list or any comparable ranking. But except for some countries, this lists seems completely random to me or is using not comparable numbers from each countries in/official statistics