US investigates leak of classified documents on Ukraine war plans.

Classified US and NATO documents containing sensitive information about plans to help Ukraine prepare for a spring offensive against Russia have been leaked on social media platforms. The documents, which include charts and details about weapons deliveries and battalion strengths, were spread on Twitter and Telegram. The Pentagon is assessing the apparent security breach. Some of the documents appear to have been altered in a disinformation campaign by Russia. The conflict between Ukraine and Russia has killed thousands of people, wrecked cities, and destabilised the global economy.