In a landmark address to major leaders of the Arab and Muslim world this weekend, President Trump spoke of a renewed relationship between the U.S. and the Muslim world, united in a fight against extremism, and bound by the concept of ‘principled realism.’

Speaking in Saudi Arabia in a grand ballroom before the assembled representatives from 55 Arab and Muslim countries, Trump described the fight against Islamic extremism as a “battle between Good and Evil,” and went to great lengths to distinguish between Islam as a religion from its radicalized adherents like ISIS and al Qaeda.

“This is not a battle between different faiths, different sects, or different civilizations,” he said. “This is a battle between barbaric criminals who seek to obliterate human life, and decent people of all religions who seek to protect it.”

And with all the talk about an ongoing battle between forces of good and evil, the Trump administration is taking serious and tangible steps to show commitment to that very conflict, signing a historic $110 billion arms deal with the Saudis that was touted as an economic boon to both countries, but is more significant in its timing and messaging.