The world hasn't actually changed much - it's still the grubby, ruthless, cynical, lawless, violent place that it was even before human vanity chose to illustrate it otherwise. If, as Dyer does, you have the luxury of sitting in a warm office in a safe country and you squint just right, you see no difference between a Mugabe and a Bush. That does not mean that there isn't such a difference, only that through a combination of pig-headedness and ideology that you can't see one.
The UN sure did a great job with the USSR while Joe Stalin was murdering 50 million of its citizens..