The UN nuclear agency says it will need an extra 4.6 million euros ($5.7 million) from members to fund extended intensive monitoring of Iran's nuclear program.
The International Atomic Energy Agency specifies that amount in a confidential note dated Wednesday and shared with The Associated Press.
IAEA chief Yukiya Amano is expected to ask the agency's 35 board members during a Dec. 11 meeting for contributions to pay for further policing of Iran's compliance with an interim agreement capping nuclear programs that could be turned to military uses.
A comprehensive accord will replace that deal signed a year ago by Iran and six world powers. But newly extended talks failed to reach agreement last month, and the interim deal was extended.
Iran denies any interest in nuclear arms.