U.S. President Donald Trump's tariff letters that threaten steep duties on several countries, including key allies, have led to "shock" and "regret" even as nations expressed optimism that negotiations would yield favorable results. Japanese Prime Minister Shigeru Ishiba said the latest tariff announcement was "truly regrettable," while stressing that he would continue negotiations with the U.S. government, according to local media reports. Japan is among the two nations set to to see an increase in the "reciprocal" tariff rate that Trump had announced in April. Japanese imports into the U.S. will face a 25% ... (full story)