The US has only 25% of the Patriot missile interceptors needed for its military plans due to recent high usage, leading to a halt in transfers to Ukraine, though this decision was partially reversed by Trump amid ongoing tensions and military needs.
Russia is seeking to resupply its arsenal for the ongoing war in Ukraine and is turning to North Korea as a potential source of ammunition. Estimates suggest that North Korea has a vast arsenal of artillery shells and rockets that could significantly bolster the Russian military. Russian Defense Minister Sergei Shoigu recently visited North Korea, and it is expected that North Korean leader Kim Jong Un will visit Russia soon to discuss a possible deal on munitions transfer. While the US has warned against such transfers, there is little they can do to prevent it. Additionally, Russia has been importing drones from Iran and has developed new weapons to counter Ukraine's summer counteroffensive.