President Donald Trump has placed a new condition on a nuclear agreement with Saudi Arabia a day after formally approving it, saying the country now must join the Abraham Accords. Trump wrote in a post on social media Thursday that the deal, which has already been signed, “will be approved,” but added, that it “is totally subject to Saudi Arabia joining the very respected and successful Abraham Accords.” The president also emphasized in the post that there would be “no enrichment” even though the agreement could lead to the country enriching its own fuel for civilian reactors. The deal has...