US President Donald Trump has unveiled a $12bn (£9bn) farm aid package aimed at helping farmers impacted by low crop prices and the administration's ongoing trade wars.

Most of the money – $11bn – is earmarked for one-time payments to farmers for row crops as part of the agriculture department's Farmer Bridge Assistance programme, with another billion reserved for crops not covered by the programme.

While farmers have broadly supported Trump, the agriculture sector has been disrupted by trade disputes during his second term, particularly with China.

Also on Monday, Trump threatened to hit Mexico with an additional 5% tariff in a row over water supplies to US farmers.

The White House says the aid package will help farmers suffering from "years of unjustified trade actions" and accumulated inflation.