The bipartisan cheers from Washington, Silicon Valley and Wall Street fed his recklessness. If he could be feted after kidnapping a Lebanese prime minister and slaughtering Yemeni children, why expect a fuss for murdering a mere journalist?

M.B.S. knows how to push Americans’ buttons, speaking about reform and playing us like a fiddle. His willingness to sound accepting of Israel may also be one reason Trump and so many Americans were willing to embrace M.B.S. even as he was out of control at home.

In the end, M.B.S. played Kushner, Trump and his other American acolytes for suckers. The White House boasted about $110 billion in arms sales, but nothing close to that came through. Saudi Arabia backed away from Trump’s Middle East peace deal. Financiers salivated over an initial public offering for Aramco, the state-owned oil company, but that keeps getting delayed.

The crackdown on corruption is an example of M.B.S.’s manipulation and hypocrisy. It sounded great, but M.B.S. himself has purchased a $300 million castle in France, and a $500 million yacht — and he didn’t buy them by scrimping on his government salary.