RUTHFULLY YOURS

What was Joe Biden thinking for his choice of climate-change ambassador extraordinaire? John Kerry is one of the biggest gasbags in American politics, singlehandedly responsible for massive amounts of terrible emissions.

People have been laughing at him since Yale, when “Doonesbury” creator Garry Trudeau was zinging his pretentious, vacuous self-promotion.

We look forward to the anti-carbon lectures from a guy who travels the globe on private jets and luxury yachts.

Set aside his deer-in-the-headlights loss as the Democrats’ presidential nominee in 2004. He was a joke as secretary of state under President Barack Obama — off on his yacht during Egypt’s 2013 military coup.

He vowed a crushing response when Syria crossed Obama’s infamous “red line” — only to have Obama pull the rug out from under him and agree to let Russia pretend to take Syria’s chemical weapons away instead.

Kerry also cluelessly “negotiated” the Iran nuclear deal even as the real talks were being run out of the White House; then he had to pretend to cheer an accord that gave away several points he’d said were non-negotiable, such as truly tough inspection requirements.

And he helped craft the 2015 Paris climate accord — a performative non-binding “triumph.”

The Kerry-initiated Israeli-Palestinian peace talks of 2013-14 went absolutely nowhere. He later blasted President Trump over moving the US Embassy to Jerusalem, insisting it would cause “an absolute explosion” — when it actually helped bring unprecedented Arab-Israeli rapprochement.

The only conclusion you can draw is that Biden, having vowed to make fighting climate change a top priority, simply wants someone who’ll look like he’s trying hard — but won’t actually get anything done.