KIEV, Sept 19 (Reuters) - Ukrainian President Volodymyr Zelenskiy vowed there would be no let up in fighting to regain territory lost to Russia after the top U.S. general warned it was unclear how Moscow would react to its battlefield setbacks in Ukraine.

KYIV, June 19: With a blessing for its European Union ambitions and a pledge of unwavering support from Britain, Ukraine vowed on Saturday to prevail against Moscow as its troops battled the Russian assault near a pivotal eastern city and communities were pounded by more heavy shelling.

KYIV, June 8: Ukrainian forces struggled to hold their ground in bloody street-to-street fighting in the eastern frontline city of Sievierodonetsk as President Volodymyr Zelenskiy said the situation was difficult, also pledging to retake Russia's gains.

LVIV, March 31: Ukrainian forces are preparing for new Russian attacks in the east of the country as Moscow builds up its troops there after suffering setbacks near the capital Kyiv, President Volodymyr Zelenskiy said on Thursday.