Cryptocurrency prices tumbled after US President Donald Trump said he would impose an additional 100% tariff on China and export controls on software. Traders saw more than $7 billion in positions liquidated in less than an hour, according to data from Coinglass.Bitcoin initially fell more than 12% after Trump made the announcement via a post on his Truth Social platform. The largest token, which had earlier this week reached an all-time high of more than $125,000, was trading around $113,000 as...