LONDON, May 19 -Moody's Investors Service believes the Ukrainian government's credit position has strengthened in recent years, yet problems may arise in the future, the ratings agency said in its annual report on Ukraine.

"A growing stability in the parliamentary democratic regime, more balanced macroeconomic growth, accession to the World Trade Organization, and various other factors have combined to stimulate much-needed microeconomic restructuring and energy-efficiency measures," said Moody's Vice President Jonathan Schiffer. "In fact, these factors have prompted a review of Ukraine's ratings for upgrade."