On September 13, 2024, British Prime Minister Keir Starmer and U.S. President Joe Biden discussed allowing Kyiv to use long-range missiles against Russia. This followed President Zelensky’s U.S. visit and raised significant NATO and international security concerns. No public decision was announced, likely due to Russian President Putin’s warning on September 12 that such a move would involve NATO in direct conflict with Russia, prompting potential Russian countermeasures.