The U.S. has told allies that any Russian invasion of Ukraine would potentially see it target multiple cities beyond the capital Kyiv, according to three people familiar with the matter.

Cities that could also come under attack include Kharkiv in the northeast and Odessa and Kherson in the south, said the people, all Western officials who asked not to be identified talking about such sensitive matters. They did not provide details on the intelligence they said underlined these calculations.

The U.S. view is shaped in part by granular insight into the types of Russian forces and capabilities currently near Ukraine, as well as how they might be prepared to act from multiple locations, the officials said. They did not specify what a potential attack might include, or comment on what Russian President Vladimir Putin’s ultimate goal might be in taking such action, but one person said U.S. assessments suggest any large scale invasion could be backed up by air support and cyber disruptions.