It's time for the United States to hold Iran accountable.

The Trump administration is pushing for inspections of suspicious Iranian military sites in a bid to test the strength of the nuclear deal that President Donald Trump desperately wants to cancel, senior U.S. officials said.

The inspections are one element of what is designed to be a more aggressive approach to preventing Iran from obtaining a nuclear weapon. While the Trump administration seeks to police the existing deal more strictly, it is also working to fix what Trump's aides have called "serious flaws" in the landmark deal that -- if not resolved quickly -- will likely lead Trump to pull out.

That effort also includes discussions with European countries to negotiate a follow-up agreement to prevent Iran from resuming nuclear development after the deal's restrictions expire in about a decade, the officials said. The officials weren't authorized to discuss the efforts publicly and spoke on condition of anonymity.

The inspections requests, which Iran would likely resist, could play heavily into Trump's much-anticipated decision about whether to stick with the deal he's long derided.

If Iran refuses inspections, Trump would finally have a solid basis to say Iran is breaching the deal, setting up Tehran to take most of the blame if the agreement collapses. If Iran agrees to inspections, those in Trump's administration who want to preserve the deal would be emboldened to argue it's advancing U.S. national security effectively.

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