There certainly are very difficult issues that must be sorted out before a peacekeeping mission could go into Donbas, notably the composition and formal mandate of whatever force is deployed. But, again, if the will is there, these questions should not be intractable.
必须在维和部队开进顿巴斯前解决部队组成和正式任命等艰难问题。不过同样，如果确有意愿，上述问题应该总能解决。