U.S. Secretary of State Marco Rubio has expressed significant concern over Iran's steadfast refusal to engage in discussions regarding its ballistic missile program. According to Jin10, Rubio emphasized that this stance poses a 'very, very serious problem' in the context of international security and diplomatic efforts. The issue of Iran's missile capabilities has been a longstanding point of contention, affecting negotiations and regional stability. Rubio's remarks highlight the ongoing challenges faced by the international community in addressing Iran's military developments and their implications for global peace.