The United States and Iran both signalled that they were ready for war as a fragile ceasefire teeters, with peace talks still uncertain after the US seized an Iranian cargo ship that tried to run its blockade. Former US diplomat Donald Heflin, a senior fellow of diplomatic practice at Tufts University, shares his thoughts with CNA's Asia First. Subscribe to our channel here: https://cna.asia/youtubesub Visit our website: https://cna.asia Download our app: https://cna.asia/app Get our editors'