North Korea defended its recent testing of nuclear warheads and ballistic technology at the UN General Assembly on Friday, calling them "righteous self-defensive measures" to preserve the country'...
Israel has 200 nuclear weapons, former US secretary of state Colin Powell said in a leaked email, part of a trove that has been released online.
North Korea could have enough plutonium and highly enriched uranium by the end of 2016 to build up to 20 nuclear bombs, a leading US nuclear scientist says.
World leaders on Friday spoke of further sanctions against North Korea in reaction to the Stalinist country's announcement of carrying out its fifth nuclear test.
Iran has placed Russian-supplied anti-aircraft missiles at one of its nuclear facilities, the Iranian news agency Fars reported Sunday.