Leaders everywhere have failed catastrophically. They will NEVER do anything to prevent the climate collapse. They are doing everything possible to get money and power from fossil fuels.
They don't care and never will. They are hypnotized and, in effect, actual morons. Their own children will suffer grievously from their climate abuse. Children of these "leaders" will curse their parents with their dying breaths.
Fortunately, more than a billion people are sane and caring. Once we realize our numbers, we can end this nonsense and work with scientists to stabilize the climate.
We may or may not be too late. But we must try.