"Apologies if you weren’t trying to imply certainty, it just came off that way."
There's no need to apologize.
Am I reading too much into a tweet? Probably, though this is intentional.
People are inferring that Trump and Putin are about to start Cold War II based off a 140 character limited statement. They're doing so based on how they interpret the word capability. I presented a counter point, but went into greater detail and, as always, tried to provide context of the state of the US nuclear arsenal as well. As you correctly point, this is the "best case" interpretation. Its presence is here to offset the "worst case" interpretation.
"Also, what was up with that comment at the start of this post?"
Now, I was going to post a list of articles portraying Trump's statement negatively, but finding articles from 21 hours ago is now impossible as they've been drowned out by the latest Trump statement, so that is impossible now. I'll just say that media coverage was one sided.
And "Trump is dangerous" story has been floated for months. The issue has even been linked to nuclear weapons. Clinton invoked the Daisy Chain ad during the campaign. I linked it above. Obama has repeatedly said Trump is "unfit" and has inappropriate "temperament" which are vaguer implications he shouldn't be near nuclear weapons. It was the whole, unspoken premise behind the faithless elector campaign. Again, it's going to be difficult to find stories about this prior to the last 24 hours.
I brought the issue up because I knew I'd be asking the following question at some point:
"Which leads me to believe you meant Trump is more willing to use them. Where is the evidence of this? It’s not in the tweet, which only says the US “must strengthen and expand its capacity.”
As I wait for the answer to that question, let's take a look at what Trump has already said about nuclear weapons.
"Asked whether the U.S. should be the first to launch a nuke during a confrontation with an enemy, Trump said that should be the “absolute last step.” “Power of weaponry today is beyond anything ever thought of, or even, you know, it’s unthinkable, the power,” he said. “It’s a very scary nuclear world,” he added. “Biggest problem, to me, in the world, is nuclear, and proliferation.”"
"“I don’t want to rule out anything,” he said. “I will be the last to use nuclear weapons. It’s a horror to use nuclear weapons.” “I will not be a happy trigger like some people might be,” he added. “But I will never, ever rule it out.”"
"“I will have a military that’s so strong and powerful, and so respected, we’re not gonna have to nuke anybody,” he said, adding that he would be “amazingly calm under pressure.”"
He also made a statement about how Japan and South Korea might someday need to acquire a nuclear arsenal.
And he knew about the poor state of the US system as early as March, when he said this:
"We have nuclear arsenals which are in very terrible shape. They don’t even know if they work.”
So I asked where this belief in itchy trigger finger came from believing I knew the answer, which is that it comes from the media portrayal as Trump as a madman… just as Goldwater, Reagan, and McCain were. Because Trump has spoken about nuclear weapons before, and none of his statements were controversial.