Uranium this, uranium that. What is it, how much does Iran have and why does Trump bring it up?

Iran’s nuclear stockpile — a key part of negotiations to end the war and a focus of Trump’s — explained | CNN…

What happens to Iran’s enriched uranium stockpile, including the 970 pounds that it has highly concentrated to near-weapons grade, is one of the primary sticking points as the US and Iran have trudged through weeks of…