The Turkish currency fell again today, breaking a three-day quiet spell in the country currency crisis, after the United States threatened to impose new sanctions on the NATO country. The lira dropped about 5 percent, to about 6.11 per dollar, after US President Donald Trump posted a tweet warning the country of more punitive measures over the continued detention in Turkey of American pastor Andrew Brunson, an evangelical pastor who faces 35 years in prison on charges of espionage and terror-related charges. Turkey's trade minister, Ruhsar Pekcan, said her government would respond to any new trade duties. Dashing hopes for a quick solution to the dispute, a Turkish court today rejected an appeal for the pastor's release from house detention. Upholding a lower court's decision earlier this week, it also ruled against lifting a travel ban imposed on Brunson. The United States has already imposed sanctions on two Turkish government ministers and doubled tariffs on Turkish steel and aluminum imports. Turkey retaliated with some USD 533 million of tariffs on some U.S. imports \u2014 including cars, tobacco and alcoholic drinks \u2014 and said it would boycott U.S. electronic goods. The diplomatic dispute is worsening investors' concerns about Turkey's fundamental economic problems. The country has amassed high levels of foreign debt to fuel growth in recent years and as the currency drops, that debt becomes so much more expensive to repay, leading to potential bankruptcies. Economists are worried of a recession. Meanwhile, President Recep Tayyip Erdogan's has consolidated power over the central bank, and pushed for it to refrain from raising interest rates to support the currency, as experts say it should.