Iran’s Supreme Leader invalidates US memorandum following seven days of attacks
Supreme Leader Mojtaba states that repeated US breaches render the President’s signature worthless, coinciding with reports of sustained aerial strikes and a contested closure of the Strait of Hormuz.

Iran’s Supreme Leader Mojtaba has formally declared the memorandum of understanding between Tehran and the United States invalid, citing repeated violations by Washington that he argued have rendered the US President’s signature “worthless and worthless.” The statement, issued on 18 July 2026, marks a significant escalation in diplomatic rhetoric as tensions between the two nations intensify.
The declaration comes amidst reports that the United States has conducted seven consecutive days of attacks on Iranian territory. According to the source material, these sustained military actions have caused the previously signed agreement to become merely symbolic, with the situation worsening rapidly. Mojtaba’s assertion that the breaches invalidate the core of the deal suggests a complete collapse of the diplomatic framework established prior to the escalation.
Compounding the diplomatic crisis, Iran’s military command has announced it will target any ship transiting the Strait of Hormuz, effectively declaring the strategic waterway closed to all vessel traffic. This move follows Iranian strikes on two vessels attempting to pass through the route and recent US airstrikes in southern Iran. The military command’s directive signals a shift from diplomatic protest to active maritime enforcement.
However, the status of the Strait remains a point of contention. US Central Command has denied the closure, stating that commercial ships continue to transit the area. This contradiction highlights the fragmented nature of the current conflict, where military actions on the ground and sea are proceeding alongside competing narratives regarding the status of key infrastructure.
The geopolitical instability unfolds against a backdrop of global events, including the ongoing 2026 FIFA World Cup in the United States and the NBA Finals, where the New York Knicks lead the San Antonio Spurs 3-1. Despite the sporting focus, the underlying conflict between Iran and the US continues to dominate security discussions, with the memorandum of understanding now viewed by Tehran as a nullified document.


