Tensions are rising ahead of planned U.S.-Iran talks, as Pakistan pushes forward with preparations despite fresh conflict near the Strait of Hormuz. A U.S. seizure of an Iranian cargo ship has drawn sharp warnings from Tehran, casting doubt on whether negotiations will go ahead. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@cbcnews Subscribe