Want evidence that money speaks louder than the international imperative to counter a rapidly metastasizing global jihadi threat, as symbolized by the latest attack in Manchester? Look no further than U.S. President Donald Trump's recent visit to the world's chief ideological sponsor of jihadism, Saudi Arabia. The trip yielded business and investment deals for the United States valued at up to almost $400 billion, including a contract to sell $109.7 billion worth of arms to a country that Trump previously accused of being complicit in 9/11.

By exporting Wahhabism — the hyper-conservative strain of Islam that has instilled the spirit of martyrdom and become the source of modern Islamist terror — Saudi Arabia is snuffing out the more liberal Islamic traditions in many countries. Indeed, Saudi Arabia's Wahhabi fanaticism is the root from which Islamist terrorist organizations ranging from the Islamic State group (which claimed responsibility for the Manchester concert attack) to al-Qaida draw their ideological sustenance.

The Manchester attack, occurring close on the heels of Trump's Saudi visit, has cast an unflattering light on his choice of a decadent theocracy for his first presidential visit overseas. The previous four U.S. presidents made their first trips to a neighboring ally — either Mexico or Canada, which are flourishing democracies. But Trump, the businessman, always seeks opportunities to strike deals, as underscored by his 100-day trade deal with the world's largest autocracy, China.