Ukraine's European allies have promised to maintain their steadfast support, but bickering over a major 90 billion euro EU loan to cover Kyiv's military and economic needs for two years has reflected the mounting challenges.

By Olena Harmash KYIV, March 20 (Reuters) - Ukraine is still expecting the first tranche of a 90-billion euro ($103.89 billion) loan from the European Union next month, despite a failure to break Hungary's veto of the funding at a summit this week,