French President Macron said the UK, France, Italy, the Netherlands and other countries are prepared to take action in the Strait of Hormuz.

Iran's Supreme National Security Council says it has completed the text of a memorandum of understanding with the United States.

Russian drones and missiles struck Ukrainian cities, including Kyiv, early on Monday, hours after Putin and Trump spoke by phone. Kyiv's mayor said apartment blocks in multiple districts caught fire from "enemy" strikes and the central Pechersk Lavra monastery was hit; about 140,000 households lost power. Ukraine's second-largest city Kharkiv, the central city Dnipro and locations in Crimea were also struck.