US President Donald Trump has decided on a naval blockade of Iranian ports. This move came after military and diplomatic talks between Iran and the US ended in failure. The blockade risks raising tensions in the Persian Gulf and Strait of Hormuz, while also creating uncertainty in global energy markets. Iran condemned the blockade at the UN as a violation of its sovereignty, stating that the step threatens regional and international peace. International actors such as China and Russia also opposed the blockade, emphasizing the need to preserve stability in the region. In energy markets, prices are rising, and tanker insurance premiums are expected to increase. The US move is seen as part of a strategy to pressure Iran, but it is assessed to increase the risk of regional conflict and affect global energy supply.