Japan will not sacrifice the agricultural sector as part of its tariff talks with the United States, its top negotiator said on Tuesday, after President Donald Trump complained that the key Asian ally was not buying American rice.

US President Donald Trump has threatened to impose a "30% or 35%" tariff on Japan if a deal between the two countries is not reached before a deadline next week. That would be well above the 24% tariff Japan was hit with as part of Trump's so-called "Liberation Day" on 2 April, when he announced steep import duties on countries around the world.