The Wall Street Journal | Michael R. Gordon: President Trump has put Iran on notice that the punishing sanctions he plans to impose on Monday are just the opening salvo of an ambitious strategy to compel Tehran to pull back from its assertive posture in the Middle East or risk collapse.

�Our objective is to force the regime into a clear choice: either abandon its destructive behavior or continue down the path toward economic disaster,� Mr. Trump said in a statement Friday night.

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