The Biden administration has not given Ukraine carte blanche to launch missiles into Russia. The license comes with boundaries; the missiles can only be fired into the Kursk region of Russia that Ukrainian troops invaded in August.

The United States has given two reasons for their permission to use their missiles to strike the Kursk region. The Biden administration seems to have been tipped in favor of allowing the strikes by the introduction of North Korean troops into Kursk. The hoped for benefit would be deterring North Korea from sending more troops.