Donald Trump has earned relieved plaudits for delivering a relatively moderate speech to 50 leaders on the second day of his visit to Saudi Arabia. In place of the anti-Islamic screeds that marked his campaign and his travel ban on six Muslim-majority nations, twice overturned by courts, Mr Trump sought cooperation with West Asia’s leaders to confront “the crisis of Islamic extremism”. This meant “starving terrorists of their territory, their funding, and the false allure of their craven ideology”. Mr Trump was careful to clarify that cracking down on terrorism was a common agenda. “We are not here to lecture