Omaha | Warren Buffett warned shareholders that the US economy faces a slowdown this year, naming the commercial property sector, banking system, and tensions with China as the three big risks for the US to watch.

The billionaire investor told Berkshire Hathaway’s annual general meeting that rising interest rates would slow business activity in 2023, although they boosted Berkshire’s interest income from $US50 million ($74 million) to $US5 billion in 12 months.