(Reuters) – Annual inflation in Russia accelerated to 14.53% as of March 18, its highest since November 2015 and up from 12.54% a week earlier, the economy ministry said on Wednesday, as the battered rouble sent prices soaring amid unprecedented Western sanctions. Inflation accelerated sharply as the currency fell to an all-time low earlier in March and demand for a wide range of goods, from food staples to cars, rose sharply on expectations that their prices will rise further. Weekly inflation in Russia slowed slightly to 1.93% in the week to March 18 from 2.09% a week earlier, taking the yea…