North Korea is believed to have dispatched thousands of soldiers to Russia to support its invasion of Ukraine, with thousands more anticipated to join by the year’s end, according to South Korean intelligence and military officials. While the National Intelligence Service said in its latest analysis the costs of North Korea stepping into the war seem to outweigh the benefits, other experts in Seoul say Pyongyan...
North Korea has been stockpiling munitions since the 1950s.
Ammo does not have a infinite shelf life tho. Artilery grenades can be stored for two to three decades at the most.