I don't think it is possible to "fix" Somalia ... This isn't because Somalia is "So far gone" that it could not be fixed, it is because the timeline and cost to create a workable government in Somalia is far beyond what any country would be willing to put forward.
Effectively, what would need to happen is you would have to take control of the country and impose law and order for 10 to 20 years; after that you could start introducing a (democratic) government over the next 10 to 20 years; and after the government is in place you would have to continue to support it for 10 to 20 years. Only after the people who were raised, educated and came of age in the secure country you provided fully took control of the government would you be able to successfully leave the country.
