The key bit starts around 9:00, and what makes it so extraordinary is not so much that Trump condemns terrorism - even Obama was willing to do that at least rhetorically - but because he put so much emphasis on who the victims are, and refused to countenance the usual excuses offered to explain away the motivations of individual terrorists.
And Trump laid it out in a surprisingly eloquent manner: The potential of the Middle East itself is held back by terrorism. No way should a region that rich be a place from which refugees flee, and yet it happens with regularity. It's not because the region doesn't have enough wealth. It has plenty. But the ever-present threat of extremist violence always makes the region to unstable to be a suitable home for far too many people.
Do stay until the end to hear how thoroughly he calls out Iran for its support and tolerance of terrorism. That alone was worth it.