♤ In July 2007 North Korea shut down its main Yongbyon reactor after receiving 50,000 tons of heavy fuel oil as part of an aid package.

♤ In May 2009 North Korea carried out its second underground nuclear test. UN Security Council condemns move in June.

♤ In February 2013 UN approved fresh sanctions after North Korea stages its third nuclear test, said to be more powerful than the 2009 test.

♤ 2014 March - North Korea test-fired two medium-range Rodong ballistic missiles for the first time since 2009,