Iran’s Strait of Hormuz dispute has expanded with new claims from both Iran and Iraq. An Iraqi oil ministry official said a closure of the strait could disrupt nearly 4 million barrels of Iraqi crude exports within three days, underscoring the potential impact on regional energy flows. Separately, Iran’s Islamic Revolutionary Guard Corps Navy said it began blocking the strait from the evening of April 18 in response to continued U.S. maritime restrictions on Iranian ports and ships. The new content adds an explicit estimate of Iraqi export exposure and a more specific operational claim from the IRGC Navy, further developing a topic that already included Iranian diplomatic, military, and maritime security statements about restricting passage through the chokepoint.