Choe made the remark during her meeting with Russian Foreign Minister Sergey Lavrov, according to a report by Sputnik, which came amid North Korean troops' possible participation in Russia's war with Ukraine.
Choe was quoted as saying by the Russian news agency that the current situation, and also future threats and challenges, "require more than ever to strengthen our modern strategic offensive nuclear weapons, as well as improve our readiness for a nuclear response."
The North Korean official also said the situation on the Korean Peninsula can become "explosive at any moment" as "the military alliance of the United States and South Korea is turning into a military alliance with a nuclear component."
Choe also said Pyongyang is confident of Russia's victory in its war with Ukraine and that North Korea will "always stand firmly next to our Russian comrades," reports Yonhap news agency, quoting Sputnik.
In response, the Russian foreign minister noted that "very close cooperation" has been established between Pyongyang and Moscow in terms of their "military and security services."