Will Iran President’s death drag the Middle East into large-scale war?

The Iranian President and Foreign Minister died in a helicopter crash incident on May 21. There are conspiracy theories that suggest the accident was conducted by the United States and Israel, but existing evidence indicates that the cause of the accident was due to the helicopter’s lack of maintenance as a result of U.S. sanctions. Having already led to so many tragedies, does America’s long-arm jurisdiction still maintain its legitimacy?