Donald Trump’s Imperial Presidency Is Imperiled

After mass protests and a military parade flop, Trump emerges from the weekend one year older and much, much weaker.

I’ve always believed that the theory that Donald Trump is, at his core, a sulky toddler, downplays the extreme danger he poses — not just to America, but the entire world order.

After all, preschoolers who dissolve into tantrums don’t have access to the nuclear codes or despicable plans to terrorize and deport millions of people.

But last weekend, Trump c…