Iran war spills beyond borders

What began as a US-Israeli campaign against Iran within the Middle East is spreading far beyond the region. It now includes Iranian drones striking an airport in Azerbaijan, NATO forces shooting down a missile headed toward Turkish airspace and a US submarine sinking an Iranian frigate in the Indian Ocean. Ali Vaez, Iran Project Director at the International Crisis Group, speaks with The World's Host Carolyn Beeler about how and why the conflict is expanding.