Here's some background information about the International Atomic Energy Agency and nuclear power.
The International Atomic Energy Agency (IAEA) inspects nuclear and related facilities under safeguard agreements. Most agreements are with countries that have committed to not possessing nuclear weapons. The IAEA is the verification authority to enforce the Treaty on the Non-Proliferation of Nuclear Weapons (NPT).
Other Facts: The IAEA has 169 member states.
Yukiya Amano has been the director general of the IAEA since December 1, 2009.
There are 35 member countries on the IAEA Board of Governors, which meets five times a year.
Current status of the nuclear industry: There are 450 nuclear power reactors in operation.
There are 55 nuclear power reactors under construction.
Timeline: 1939 - Nuclear fission is discovered.
1942 - The world's first nuclear chain reaction takes place in Chicago as part of the Manhattan Project.
July 16, 1945 - The United States conducts its first nuclear weapons test in New Mexico.
August 9, 1945 - An atomic bomb is dropped on Nagasaki, Japan.
August 29, 1949 - The Soviet Union conducts its first nuclear weapons test.
December 1951 - Electricity is first generated from a nuclear reactor at the National Reactor Testing Station in Idaho.
October 3, 1952 - The United Kingdom conducts its first nuclear weapons test.
December 8, 1953 - In a speech to the UN General Assembly, President Dwight D. Eisenhower asks the world's major powers to work together in developing peacetime uses of the atom. This is known as the Atoms for Peace program and 40 countries participate. Also during this speech, Eisenhower proposes the creation of an international agency to monitor the spread of nuclear technology.
June 26, 1954 - In the Soviet Union, the first nuclear power plant is connected to an electricity grid to provide power to residences and businesses in a town near Moscow.
1957 - The IAEA is established to facilitate the peaceful use of nuclear energy.
1950's - Brazil and Argentina begin research and development of nuclear reactors.
February 13, 1960 - France conducts its first nuclear weapons test.
October 16, 1964 - China conducts its first nuclear weapons test.
March 5, 1970 - The NPT goes into effect.
May 18, 1974 - India conducts its first nuclear weapons test.
March 28, 1979 - A partial meltdown of the Three Mile Island nuclear power plant occurs in Middletown, Pennsylvania. It is determined that equipment malfunctions, design-related problems and human error led to the accident.
1981 - Swedish diplomat Dr. Hans Blix is appointed director general of the IAEA.
April 26, 1986 - Reactor number four explodes at the Chernobyl Nuclear Power Plant, releasing large amounts of radiation into the atmosphere.
September 24, 1996 - The United States, China, France, the United Kingdom, Russia and 66 other UN member countries sign the Comprehensive Nuclear Test Ban Treaty, barring the testing of nuclear weapons.
December 1997 - Mohamed ElBaradei is appointed IAEA director-general.
May 1998 - India and Pakistan test nuclear devices amid tensions between the neighboring countries.
January 10, 2003 - North Korea announces its withdrawal from the NPT.
October 7, 2005 - The IAEA and ElBaradei are named the winners of the Nobel Peace Prize.
December 1, 2009 - Yukiya Amano replaces ElBaradei as director general of the IAEA.
March 11, 2011 - A 9.0 magnitude earthquake strikes near the coast of Honshu, Japan, creating a massive tsunami. The tsunami knocks out the Fukushima Daiichi nuclear power plant's cooling systems. The cores of three of six reactors are damaged by overheating. Sesulting hydrogen explosions blow apart the buildings surrounding two reactors.
May 30, 2011 - Germany announces it will abandon the use of all nuclear power by the year 2022. This repeals a 2010 plan to extend the life of the country's nuclear reactors.
November 11, 2013 - Iran signs an agreement with the IAEA, granting inspectors access to nuclear sites.
July 14, 2015 - After 20 months of negotiations, Iran reaches a comprehensive agreement with the United States and other countries that is aimed at reining in Iran's nuclear program. In exchange for limits on its nuclear activities, Iran will get relief from sanctions while being allowed to continue its atomic program for peaceful purposes.
August 11, 2015 - Japan restarts a nuclear reactor on the island of Kyushu. It's the country's first reactor to come back online since the 2011 tsunami.