Experts say they do not believe the North has the ability to miniaturise an atomicweapon to place on a missile.
3
Iran has always denied seeking an atomicweapon, saying its activities are only for peaceful purposes, such as power generation and medical research.
4
The agreement aims to prevent Iran from developing an atomicweapon, although Tehran has always maintained its nuclear program is for peaceful purposes.
5
Most Western intelligence agencies believe the soonest Iran could have an atomicweapon is in several years that would be a worst-case scenario.
6
North Korea has twice tested a nuclear device but there are doubts whether it already has the ability to create an atomicweapon.
7
He wondered if Soviet physicists and other scientists would have been able to develop an atomicweapon as rapidly as the Americans had.
8
The agreement aims to prevent Iran from developing an atomicweapon, although Tehran has long maintained its nuclear program is purely for peaceful use.
9
Einstein feared that German nuclear researchers might gain an unbeatable lead in the field and develop an atomicweapon that could win the war.
10
Kim Jong-un's threat to test a powerful atomicweapon over the Pacific Ocean should be taken "literally", North Korea's top diplomat said.
11
Israeli leaders have repeatedly expressed alarm over Iran's nuclear ambitions and refused to rule out pre-emptive military action to stop Iran developing an atomicweapon.
12
Einstein never returned to Germany, and signed a letter to President Roosevelt alerting him to the fact that Germany might be developing an atomicweapon.
13
The head of Israel's Mossad spy agency, Meir Dagan, said on Tuesday that Iran may obtain the technology to build an atomicweapon by 2014.
14
The Chelyabinsk blast is estimated to have been between 200 and 800 kilotons, on par with a huge atomicweapon.
15
The first atomicweapon which leveled Hiroshima in 1945, had a yield of 13 kilotons; that is, the explosive power of 13,000 tons of TNT.
16
But South Africa was years from being able to build atomicweapons.