An interim agreement with Iran may be closer than ever, but the Trump administration faces major challenges ahead.

Key sticking points include dismantling Iran's nuclear program, handling enriched uranium, unfreezing billions in frozen Iranian assets and the funding of proxy groups.

On each point, Trump will have to make the case to the American public on why it improves on former President Barack Obama's Iran deal.

AI-generated summary was reviewed by a CNN editor.

There is suddenly newfound optimism about the Trump administration reaching an agreement with Iran to extend the ceasefire and to start to bring the war to an end — and not just inside President Donald Trump’s head this time.