CNN Inside Politics: A Battlefield of Unknowns 

First: The world is bracing for Iran's next move as the country warns the US will pay for bombing three of its key nuclear facilities. US officials are racing to assess the damage and determine if Iran still is a nuclear threat. 

Plus: President Trump is floating the idea of regime change to "make Iran great again." The White House claims he's raising a question, but it underscores the crucial concern across the political spectrum: How does this all end? 

And: Wall Street is zeroing in on the Strait of Hormuz amid growing fear Iran could retaliate by disrupting that essential shipping lane, which would send oil prices through the roof. 

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