Kazakhstan allowed its tenge to weaken the most since a devaluation 18 months ago, signaling Central Asia’s biggest crude exporter wants to adjust to declines in the currencies of its top trading partners, China and Russia. The tenge declined 4.4 percent to 197 per dollar by 2:29 p.m. in Almaty. That was the steepest retreat since February 2014 when the central bank, which uses its foreign-currency reserves to manage the exchange rate within a trading band versus the dollar, depreciated it by about 20 percent. Central bank representatives weren’t available to comment when contacted by Bloomberg. Pressure is mounting on countries that trade with China to let their currencies weaken after the yuan slide last week made their exports less competitive. Kazakhstan has also suffered from oil’s 22 percent retreat in the past two months, especially since its northern neighbor and trading partner Russia is allowing the ruble to […]