United States’ gravest security threat is global climate change

Retired US Marine general Stephen Cheney warns the incoming Trump administration of the security dangers of ignoring climate change

PLANNING. It is the key to successful military action — and, in many ways, to success in general — and US Marines like me pride ourselves on it.

But if you’ve spent 30 years in the military, as I have, you know that an effective plan cannot be static; operating environments change, often in surprising or unexpected ways. Donald Trump’s victory in the US presidential election earlier this month constitutes just such a change.