This after Trump lowered the tariffs on both countries to 19%. So it might not be unreasonable to think that knowing how badly Trump wants the Nobel Prize that this was part of the tariff deal. https://thehill.com/homenews/administration/5432404-cambodia-donald-trump-nobel-peace-prize/
Trump used tariff to get them to stop fighting, that's a unique and noble way to use tariffs. If Trump can encourage peace by using tariffs then more power to him. NO one has been as visionary in his approach to end wars as President Trump. One of these days you'll understand that President Trump really cares about peace in this world. And yet he is still far from a pacifist.
It's like war is a big shark and Donald Trump is a great man who tames it; he rides it, overpowers it, bends it to his will. But mind you - he's no pacifist! He's a great man, and we're lucky to have him.