ATHOME and abroad, one clear result of Donald Trump's proposed budget would be to push green programmes into the red. Between 2010 and 2035 America increased its climate-related spending in developing countries fourfold. It lavished $15.6bn on projects for clean energy, better land use and infrastructure suited to a warming world. Cutting such schemes is bad enough. But for America to step down as an environmental champion is worse. International deal-making will slow without its clout and diligence, other countries' emission-cutting efforts will shrink, and laggards such as Saudi Arabia and Russia will see no reason to catch up.
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