US President Donald Trump has announced a 10% global tariff after the Supreme Court struck down his reciprocal levies policy.Mr Trump's "reciprocal tariffs", imposed on most of the rest of the world last April under an emergency powers law, were overturned by the US Supreme Court on Friday in a major blow to the president's economic agenda.Speaking at the White House, Mr Trump said the Supreme Court decision affirmed his ability to charge more tariffs under different statutes.

US President Donald Trump has announced a 10% global tariff after the Supreme Court struck down his reciprocal levies policy.Mr Trump's "reciprocal tariffs", imposed on most of the rest of the world last April under an emergency powers law, were overturned by the US Supreme Court on Friday in a major blow to the president's economic agenda.Speaking at the White House, Mr Trump said the Supreme Court decision affirmed his ability to charge more tariffs under different statutes.