The US allegedly allowed Ukraine to fire British long-range Storm Shadow missiles deep into Russia. The probable change in Londonʼs position is a consequence of the USAʼs permission to use its ATACMS long-range missiles. All because Storm Shadow missiles use American navigation data during flight. So they made it clear that the Americans had lifted the restrictions on the use of Storm Shadow. With no official confirmation yet on ATACMS, Starmer, after consulting with advisers, said he was not ready to comment on Storm Shadow.