It depends on the level of the problem, doesn't it? If France sent a full-scale military invasion to keep tuition fees at a level of only £3200-ish a year, then I'd not exactly welcome that. But if massacres in the scale of hundreds dying happened with any sort of regularity, I'd be pretty peeved if the rest of the world turned a blind eye.
More realistically, if the August Riots of 2011 just got out of hand and our own forces were unable to deal with the problem, then I'd have hoped that our government would a) ask for help from others and b) be given such help.
Any country's problems should, ideally, be dealt with by that country first. But if this doesn't happen, and the country's own government is ineffective, then there is a case for foreign intervention, so long as it's invited and well-managed.