Speech apparently meant to boost internal unity in the impoverished country amid pandemic-related economic difficulties, and as Seoul strengthens alliance with Washington

Belgian police arrest civilian suspects who brewed ecstasy around the corner from thermonuclear warheads on American base

Stockholm International Peace Research Institute says all nine nuclear-armed countries are increasing or upgrading their arsenals for first time since end of Cold War

Iranians inform IAEA they will install two new cascades of advanced IR-6 centrifuges at underground Natanz nuclear facility; move comes as agency votes to censure Tehran

'For them, life of the people is nothing,' Ukrainian leader tells CNN. 'Let's not be afraid -- be ready'

'Naturally, we will have to reinforce these borders,' deputy chair of Russian security council says as Helsinki, Stockholm consider membership in military alliance

As the conflict drags on fears are raised that Russia could become frustrated and resort to smaller nuclear weapons in a bid to force Ukraine to surrender

Ukrainian president tells G7 summit Russia already 'used phosphorus bombs against peaceful people'; NATO says it will increase chemical and nuclear defenses in Eastern Europe

Pentagon slams Moscow's 'dangerous' rhetoric on potential use of nuclear arms, says no current plan to change US 'strategic deterrent posture'

French Foreign Minister Jean-Yves Le Drian highlights that the US, UK and France are all nuclear-armed nations and the weapons make up a core component of NATO capabilities