Donald Trump is suddenly bumping up against limits in many areas at once. Top aides just leaked to The Atlantic that he’s “frustrated” with his inability to force Iran’s hand with his increasingly deranged threats. In the case of Trump’s bogus efforts to prosecute James Comey, we just learned that he personally demanded briefings in real time about interrogations of him. That reveals in deeply humiliating fashion his extraordinary personal involvement in the case and makes it more likely it’ll get tossed. H…