California Governor Gavin Newsom has accused Donald Trump of suffering from dementia as their public war of words escalates.
The dig by Newsom, viewed as a potential Democratic presidential candidate, comes after Trump repeated a string of widely-debunked claims about aid sent to Los Angeles during the destructive wildfires in January.
In a cabinet meeting, the 79-year-old president said the federal government had to force California to 'turn a valve' of water back on', claiming Californian leaders refused to provide critical water supplies.
'We sent hundreds of millions of gallons of water per day into the Pacific Ocean,' he said.
'They turn a valve. The valve heads out. We turned the valve back. I actually had to do it using force.'
