This is accurate — the US military did announce a blockade of Iranian maritime traffic starting April 13, 2026, as part of the ongoing US-Israel war on Iran that began in late February. The claim is well-sourced across major international outlets (Reuters, BBC, Guardian, CNN, Al Jazeera). The post itself is straightforward reporting with no embellishment. Context note: The blockade follows the escalating conflict after Iran's Supreme Leader transition in March and relates to broader economic/military pressure, though the post doesn't explain why this blockade was ordered or its full strategic context.