The incumbent President Pyotr Poroshenko has signed the law on provision of the functioning of the Ukrainian as the state language. The signing ceremony was broadcast by all central Ukrainian TV channels. Poroshenko signs law on Ukrainian as sole state language: https://t.co/bsqhbR7O2m pic.twitter.com/wqFWwnp40i — TASS (@tassagency_en) May 15, 2019 Poroshenko  said he had the “greatest honor and…