China and Russia used their veto power to block a United Nations Security Council resolution aimed at reopening the Strait of Hormuz after Iran restricted the strategic waterway.The resolution, sponsored by Bahrain and supported by Gulf nations, failed despite receiving eleven favorable votes while US President Donald Trump warned of strikes.Tensions in the region remain high following the death of Ali Khamenei and the transition of power to his son, Mojtaba Khamenei, amid ongoing military conflict.The failure to secure the passage, which carries twenty percent of global oil, comes as a deadline for Iran to cease maritime attacks on merchant vessels expired.