You know, I always have a bit of a problem with this kind of stuff...a bigger country invading a smaller country...and yes, this includes the USA going into Iraq, before ya'll jump all over me.
There's a part of me that says "it's really not our problem". But then there's the other part of me that says "If we do nothing this time, when will it become our problem?". And then there's the other part of me that says "Do we let a ruthless dictator run roughshod over people just because the good people of the country are not strong enough in numbers to overcome him?".
I in no way claim to be a foreign policy expert, but here's what I think, in a very simplistic explanation.
I think that when a country is small and weak, it is up to the bigger guys to protect it, not invade it. I think when a country is being run by a harsh dictator, it is up to the other larger countries to protect that country's good people by trying to depose said harsh dictator. That isn't to say that the world should be made up of hundreds of "USAs", but the world should be made up of countries whose people have basic human rights and are allowed to live their lives, practice their religion and develop their culture generally as they see fit within reason without being under the control of or living in fear of extremist factions who are looking to force people to live a way of life which they would not choose. I think while we have been worrying about the Islamic terrorists these last few years, Russia has been quietly reversing its culture from that of the 80's & 90's when the Cold War "ended" and reverting back to the whole super Communist "Mother Russia" thing, and I hope that someone in the CIA, FBI, Homeland Security or whomever has been paying attention to them.
I think the countries who have Communist, Fascist or extremist "leanings" are envious of the USA...they are envious of our way of life, our freedom. I think Islamic terrorists issue with us has less to do with " they need oil & we have oil", "they support Israel" and more to do with "they have a way of life that we don't like and they must be annihilated". Our basic identity as Americans annoys them &
they want us gone.
Russia....there have been signs along the way that Russia was not as "anti-Cold War" as they wanted everyone to believe for the past 20 years or so, since the Reagan/Gorbachev years. Putin runs a dictatorship while trying to pretend he runs a pseudo-democracy.
And you know, I'm not sure how you fight them. With regard to the Islamic terrorist, I am not sure how you fight people who are not afraid to blow themselves up. I'm not sure if diplomatic sanctions will faze them...do you think people who are able to strap explosives to a mentally ******** person and blow them up in the town square are going to care if they don't get their delivery of goods from all the other countries of the world who would "sanction" them? I just don't think so. I think they'd have no problem letting their people die in the streets of starvation rather than backing down so they could get food deliveries. Look at China & Tianemen Square back in the day...the government had no problem running people over with tanks. Look at the recent weather disasters in Burma (or Myanmar or whatever the heck they call themselves this week)...the government wouldn't allow much foreign help after that devasatating storm...people literally died in the streets.
So, what do we do? Like I said, I don't know, and I don't think anyone else does either.