The International Atomic Energy Agency (IAEA)plays a crucial role in supporting U.S. nuclear nonproliferation goals through its safeguards and nuclear security programs. The Department of State (State) coordinates the United States' financial and policy relationship with IAEA. IAEA's safeguards program is designed to detect and deter the diversion of nuclear material for non-peaceful purposes, while the agency's nuclear security program assists countries in improving the physical protection of their nuclear material and facilities. IAEA plans to create an international fuel bank to guarantee the supply of fuel for civilian nuclear power programs. This book examines any challenges that IAEA faces in carrying out its safeguards program; any limitations regarding the nuclear security program; and the status of IAEA's planned nuclear fuel bank.