Donald Trump ... “I’m good at war. I’ve had a lot of wars of my own. I’m really good at war. I love war, in a certain way, but only when we win.”

The no holds barred Twitter launch has taken the international military, diplomats and analyst communities by storm.

“We would be holding the key, not knowing if we’re under attack or if someone had said something nasty on Twitter,” national security journalist John Noonan said.

Noonan, who was once an officer responsible for activating a security key once the appropriate launch codes were verified at an underground missile silo, now writes for the Weekly Standard.

His outburst was prompted by an unnamed source telling US news service MSNBC that Trump had repeatedly asked his national security advisers why he could not use nukes.

“Several months ago, a foreign policy expert on the international level went to advise Donald Trump,” MSNBC Morning Joe frontman Joe Scarborough said.

“And three times (he) asked about the use of nuclear weapons. Three times he asked at one point if we had them why can’t we use them.”

This triggered a 20-tweet firestorm from Noonan.

“What really concerns me is the idea of a narcissist walking around with nuclear authenticators,” Noonan tweeted.

“Imagine having to turn launch keys not knowing if we were under attack or if it was because (some) foreign leader said a mean thing on Twitter. The power is there to kill millions. Permanently alter the geopolitical landscape. It is a sacred, sobering responsibility.”

Trump’s public position on nuclear weapons has been blunt and off the cuff.

This has left many wondering what new nuclear doctrine he will impose upon the US military, of which he may soon be Commander-in-Chief.

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In March, Trump told the MSNBC he didn’t understand the reluctance to deploy nuclear weapons: “Then why are we making them? Why do we make them?”.

Trump then added: “I was against Iraq. I’d be the last one to use the nuclear weapon.”

But, earlier this year, when asked about negotiating nuclear proliferation treaties, he was dismissive: “It’s going to happen anyway.”

Not to mention his stance towards upholding decades-old mutual protection treaties.

When asked about the potential for a nuclear arms race on and around the Korean peninsula, he said: “It’s not like, gee whiz, nobody has them.”

“So, North Korea has nukes. Japan has a problem with that. I mean, they have a big problem with that. Maybe they would in fact be better off if they defend themselves from North Korea.”

He went on to tell The New York Times: “Would I rather have North Korea have them with Japan sitting there having them also? You may very well be better off if that’s the case.”

As for Trump’s view on war, here are his own words from November last year:

“This is the Trump theory on war. But I’m good at war. I’ve had a lot of wars of my own. I’m really good at war. I love war, in a certain way, but only when we win.”