An expert says the United States cancelling talks in Pakistan shows it may not be ready for serious negotiations with Iran. This has created confusion and concern for Iranian leaders. The US is also enforcing strict controls on ships going to and from Iranian ports. These actions are supported by UN sanctions that were brought back last year. This is a big problem for Iran because most of its trade—about 90%—happens through its southern ports. If these restrictions continue, Iran’s economy could be badly affected. The expert also warned that Iran might respond by making it more expensive for other countries to use important sea routes like the Strait of Hormuz. This could increase global prices for oil and goods, affecting many countries around the world.