OREANDA-NEWS. National Rating Agency (NRA) has affirmed its ‘iBB’ credit rating on Turkey. The outlook for the rating has been revised to Negative. Turkey was assigned NRA’s first-time credit rating in 2008, the latest rating action (the country’s credit rating downgrade to ‘iBB’ from ‘iBBB; outlook Stable) was on Feb. 26, 2016.