North Korea denied U.S. accusations that it has begun supplying Russia with weapons for its war against Ukraine on Tuesday, while expressing “strong regret” over the U.N. secretary general’s condemnation of its recent missile launches.

“We once again make clear that we have never had ‘arms dealings’ with Russia and that we have no plan to do so in the future,” a DPRK defense ministry official said in a statement released through the Korean Central News Agency (KCNA) on Tuesday.

The rebuttal comes after the U.S. State Department said Wednesday that Pyongyang has been “covertly supplying Russia’s war