From the New York Times:
In private, three administration officials conceded that they could not publicly articulate their most compelling — and honest — defense of the president for divulging classified intelligence to the Russians: that Mr. Trump, a hasty and indifferent reader of his briefing materials, simply did not possess the interest or the knowledge of the granular details of intelligence gathering to leak specific sources and methods of intelligence gathering that would harm American allies.
Mr. McMaster all but said that publicly from the briefing room lectern.
In other words, your honor, my client is so lazy, so intellectually thick, so uneducated, so damn downright stupid, he could not possibly have committed the crimes he's charged with. The defense rests.