“Elizabeth Rosenberg, who served as a senior Treasury adviser working on sanctions issues during the Obama administration and who now studies sanctions policy at the Center for a New American Security, said Mr. Trump’s interventions were unusual and disruptive.

“’This is not the norm in Washington,’ she said. ‘He is making up sanctions policy on his own, and influencing the course of policy in a way that undermines United States priorities and has shocked United States allies…'”

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