https://heimdallsbrief.com/briefings/2026-08-14 2026-08-14T00:45:26.418Z Heimdall's Brief en 2026-08-14T00:45:26.644Z Iran declares Hormuz closed as doctrine while US vows indefinite counter-blockade https://heimdallsbrief.com/briefings/2026-08-13 2026-08-13T00:45:26.572Z Heimdall's Brief en 2026-08-13T00:45:27.078Z Iran denies any ceasefire extension talks as Hormuz closure hardens into stalemate