Let’s go back a few decades.

Presidents Richard Nixon, Gerald Ford, Jimmy Carter, Ronald Reagan, George H.W. Bush, Bill Clinton, George W. Bush and Barack Obama had many differences of opinion on a whole range of issues.

They all agreed, though, on one key matter: They all wanted to reduce the number of nuclear weapons in the world.

Then along comes Donald J. Trump to announce to the world — via Twitter, of course — that he wants more nukes, not fewer of them.

The response from his pal, Russian President Vladimir, was equally disconcerting. Hey, no prob, said the Russian strongman.

http://thehill.com/policy/international/russia/311618-putin-trumps-nuke-talk-nothing-special

Putin takes no great concern over Trump’s assertion that we need to boost our nuclear arsenal, apparently disregarding the notion that we already can destroy the world with what we have.

Trump already has let it be known that a new nuclear arms race with the Russians is no big deal, that the United States can outlast ’em in Moscow.

Trump’s new press secretary, Sean Spicer, said the president-elect’s tweet was meant to warn the world against nuclear proliferation.

Oh, boy. Conducting foreign policy discussions via Twitter is truly for the birds.