The stockpile continues to grow, the reports say, even though Iran has consistently denied wanting nuclear arms.
"The political debate is really not going to be about negotiating with Iran, it's going to be about confronting Iran," he said.
This week's IAEA reports showed Iran was making steady nuclear progress and indicated that Tehran continued to stonewall the agency in monitoring its work.
Two diplomats said all that could be done in coming months was to support IAEA chief Rafael Grossi's efforts to strengthen oversight of Iran's nuclear programme.
"It's way too early to say whether Iran will become a nuclear state or whether it will stay a threshold state like now," one diplomat said.
Persons:
Leonhard Foeger, Biden, Trump, Donald Trump, Joe Biden, Israel, Robert Einhorn, Rafael Grossi's, John Irish, Francois Murphy, Arshad Mohammed, Edmund Blair
Organizations:
International Atomic Energy Agency, IAEA, REUTERS, Trump PARIS, Reuters, U.S, Hamas, Pentagon, U.S . State Department, IAEA Washington, Governors, Thomson
Locations:
Vienna, Austria, stoke, WASHINGTON, VIENNA, United States, Tehran, Gaza, Iran, European, Washington, Iraq, Syria, U.S, IRAN, IAEA, stonewall, Paris