ANKARA, Turkey (AP) — A financial shockwave ripped through Turkey on Friday, when its currency nosedived on concerns about its economic policies and a dispute with the U.S., which President Donald Trump stoked further with a promise to double tariffs on the NATO ally.

The lira tumbled 14 percent in one day, to 6.51 per dollar, a massive move for a currency that will make the Turkish poorer and further erode international investors' confidence in the country.

The currency's drop — 41 percent so far this year — is a gauge of fear over a country coming to terms with years of high debt, internatio...