The comments came after Seoul's spy agency reported that North Korea had decided to send a "large-scale" deployment of troops to support Moscow's war in Ukraine.
The spy agency's statement prompted expressions of concern from France and Britain, which are strong allies of Ukraine.
"Russia has seriously escalated its aggression, involving the DPRK (North Korea) in the scale of a war party. We need an immediate and strong reaction from the Euro-Atlantic community and the world. North Korea is assisting Russian aggression against Ukraine with weapons and personnel," wrote Sibiga in X.
According to him, these North Koreans are not mercenaries, but "regular troops that Moscow plans to use as cannon fodder."
The minister called on Ukraine's allies to "increase their military support for Ukraine" and to fully support President Volodymyr Zelensky's road map to end the war.
Zelensky's "plan for victory" includes a call for Ukraine to be immediately invited to join NATO.
Echoing the plan's points, Sibiga urged, "Remove restrictions on long-range strikes. Start intercepting Russian missiles and drones over Ukraine. Extend an invitation to NATO membership. Increase investment in Ukrainian arms production. Take action!"
South Korea's National Intelligence Service has released detailed satellite images that it says show the first deployment of elite North Korean special forces soldiers moving with Russian warships to Vladivostok.
"Around 1,500 North Korean special forces personnel are already in the Russian Far East and undergoing training. It is impossible to predict how this will play out on the battlefield if the North Korean military is there. This could complicate the situation," a senior Ukrainian presidency source said.
Pyongyang and Moscow have been allies since North Korea's founding after World War II and have grown even closer since Russia's invasion of Ukraine in 2022.
Seoul and Washington have long alleged that Kim Jong-un is sending weapons for Russia to use in Ukraine. | BGNES
