Milan, 10 July (LaPresse) – President Donald Trump has said that the United States will impose a 50% tariff on copper imports from 1 August. This was reported by the CNBC website.The decision was made after receiving a national security assessment, Trump said in a post on Truth Social. Copper is needed for semiconductors, aircraft, ships, ammunition, data centres, lithium-ion batteries, radar systems, missile defence systems and even hypersonic weapons, of which we are building many. Copper is the second most used material by the Department of Defence.Copper prices rose 2.62% following Trump's latest announcement, extending gains from the previous session, when they jumped 13.12% and posted their best daily gain since 1989.