Now that Crimea is officially a part of the Russian Federation, nations, especially those with borders near Russia, need to focus on the newly created border of Crimea and Ukraine. Unrest, illegal markets, and more training exercises or amassing of troops need to be watched carefully. Ukraine may not have a full army or the ability to support one, but that will not stop small guerilla groups or militias who are still sore about the event from causing trouble for innocents.
In regards to Russia and Putin, the American Intel and other nations must not simply believe that the buck stops here. Ambition is hard to kill. With Crimea obtained rather easily Putin may take this as a building block to strike at more countries and “reclaim” more territories. So be prepared and keep watch for the borders of all nations surrounding Ukraine and Russia which include Finland, Belarus, which already has armed Russian forces in it, Latvia, Estonia, Poland and nations in Central Asia.
Recently, Russia has been removed from G8 due to its activity and if this international shunning continues to take place, expect to see Russia become more aggressive and yet somehow isolationist in its foreign policies. The separation from trade will hurt the economy and force internal production, which may force the nation to close off and take on a North Korean attitude against the world, only emerging to take more nations. This is an extreme and slim probability, but one that should not be ignored.
So things such as decreased foreign trade, further removal from international organizations, increased domestic production and random or sudden contact with smaller nations not normally contacted should be things to have a close eye on. Besides these warning signs, something else to watch for is how well the integration process with Crimea and Russia itself goes.
The intelligence community, and maybe even the UN itself, will need to see how peaceful the process will be, examine the social and economic aspects and also watch for dissidents in either territory. The policy Russia implements and puts to action for the integration of Crimea must be reviewed to see if it will be fair for both parties and if it is equal and democratic.