Former U.S. national security adviser H.R. McMaster discussed the escalating feud between the United States and Iran over the Strait of Hormuz on CBS News 24/7 Mornings.

This dispute centers on one of the world's most critical maritime chokepoints. Any prolonged closure or military conflict in the region threatens global energy supplies and risks a wider war in the Middle East.

McMaster, now a CBS News contributor, appeared on the streaming program to provide context on the current tensions. The friction follows a period of extreme volatility in the region. On July 12, 2026, reports indicated that Iran fully closed the Strait of Hormuz [3]. This action was described as a retaliation for a U.S. blockade [3].

The situation remains fluid with conflicting reports on the nature of the naval activity. According to reports from July 13, 2026, the U.S. and Iran have been fighting for control of the Strait after previously agreeing to a ceasefire last month [2]. This struggle for dominance has raised concerns about a return to all-out war [2].

Further escalation occurred on July 14, 2026, when the U.S. military began a blockade of ships entering or exiting Iranian ports [1]. This move suggests a shift toward a more controlled naval stance, though it maintains high pressure on the Iranian government [1].

The Strait of Hormuz is the only sea route from the Persian Gulf to the open ocean. Because of its geography, the waterway is highly susceptible to blockades, a tactic both nations have employed during this current crisis. The ongoing struggle for control reflects deeper geopolitical tensions and the failure of recent diplomatic efforts to maintain the previous ceasefire.

“The U.S. and Iran are fighting for control of the Strait of Hormuz”

The transition from a ceasefire to active blockades by both the U.S. and Iran indicates a breakdown in diplomatic channels. By targeting port access and the Strait of Hormuz, both nations are utilizing economic and strategic leverage to force concessions, significantly increasing the risk of an accidental military engagement that could disrupt global oil markets.