The United Nations Security Council passes Resolution 2087 in response to North Koreaís Dec. satellite launch, which used technology applicable to ballistic missiles in violation of resolutions 1718 (2006) and 1874 (2009). Resolution 2087 strengthens and expands existing sanctions put in place by the earlier resolutions and freezes the assets of additional North Korean individuals and people.
North Korea conducts its third known nuclear test. UN condemns the test and places new sanctions on the country.
North Korea cuts off all contact with South Korea including the only emergency phone line between the two countries.
The United Nations Security Council unanimously passes Resolution against North Korea. Resolution 2094 strengthens existing sanctions by expanding the scope of materials covered and adds additional financial sanctions, including blocking bulk cash transfers. Additional individuals and entities also are identified for asset freezes.
Cancellation of the U.S. Minuteman III Intercontinental Ballistic Missile test because the U.S. does not want North Korea to view it as a provocation.
Japan, the only country against which nuclear weapons have been used in war, refused to sign a statement on the humanitarian impact of nuclear weapons at the 2013 Non-Proliferation Treaty PrepCom. The statement was introduced by South Africa and was signed by 80 nations.
Egypt walks out of the 2013 Non-Proliferation Treaty (NPT) Preparatory Committee as a result of the "flagrant non-fulfillment of agreed commitments" in the 2010 NPT outcome document, namely convening a conference on the subject of a zone free of nuclear weapons and other weapons of mass-destruction in the Middle East.
The U.S. Air Force launches an unarmed Minuteman III Intercontinental Ballistic Missile from Vandenberg Air Force Base in California to the Kwajalein Atoll in the Marshall Islands, 4,200 miles away.
US President Barack Obama assigns $537 million in his proposed budget to upgrade US bombs deployed in Belgium, Germany, Italy, the Netherlands and Turkey.
US President Barack Obama calls for US-Russia nuclear weapon cuts in a speech in Berlin.
India activated the reactor on board the INS Arihant nuclear submarine, the first to be designed and built in India.
A man from Sierra Leone is arrested at New York's John F Kennedy airport with uranium samples concealed in the soles of his shoes in his luggage.
Iranís new President Hassan Rouhani makes a pledge that his country would never build nuclear weapons.
Iran arrested four people for trying to sabotage a nuclear site.
Sources show that Saudi Arabia has invested in Pakistani nuclear weapons projects, and believes it could obtain atomic bombs at will.
Police Officers working for the Ministry of Defence in the UK are investigated after claims that they failed to carry out routine inspections of a nuclear weapons factory.
Russia deploys tactical ballistic missiles suggesting that Russia is taking a more assertive stance in the region. Since being in power, President Vladimir Putin has made new nuclear delivery systems a top priority.