Climate change

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It is a borderless problem no state can solve alone, driven by choices that benefit some and harm others, requiring collective action among unequal sovereign states.

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When everyone benefits if all cooperate, but each has an incentive to free-ride — enjoy the benefit while others pay the cost.

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The idea that those who caused climate change — the rich, high-emitting countries — should help those hit hardest, the poorest who emitted least.

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Cutting emissions costs now while the benefit (a stable climate) is shared by all, so each state is tempted to let others cut — weakening cooperation.

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Through international agreements (like the Paris Agreement) where states set their own pledges, meet to raise ambition, and (in principle) fund poorer countries.

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Pledges are voluntary and non-binding, enforcement is weak, states protect short-term interests, and promised climate finance often fails to arrive.

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Money the rich countries promised to help poorer countries pursue clean development, adaptation and loss-and-damage — often under-delivered.

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Because there is no world government to compel sovereign states, so cooperation depends on voluntary agreement, transparency and pressure.

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The rich, high-emitting countries caused most warming and gained most wealth from fossil fuels, so they should cut most and fund poorer countries.

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Through transparency, peer pressure, falling clean-energy costs and the scale of the threat, which can drive real action even without a binding enforcer.

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Keep the universal framework but strengthen it — the rich lead cuts and deliver finance, raise ambition through accountability, and make clean energy cheaper.