United States National Security Council spokesperson Sean Savett said the Biden administration is concerned about the reports, writing in a statement that the matter "would mark a significant increase" in the defense relationship between Russia and North Korea, as per NPR.

South Korea also said that it would look for signs of North Korea's increased involvement in Russia, a declaration that comes as North Korea has increased political tensions with South Korea over the past several weeks, including blowing up major roads and railways that connect the two countries' borders.

Kremlin spokesperson Dmitry Peskov denied the North Korean troop deployment allegations, claiming it was a Ukrainian "information hoax." However, Ukrainian officials said that North Korean engineers have been sent to Russia to monitor how well the missiles they supplied to Moscow have been launching.

President Zelensky told lawmakers that he hoped allied leaders would change their strategies to help Ukraine defeat Russia. He said he would continue to press NATO about Ukraine's sought after membership.