(CNN) If you invade, don't expect our people to make it easy for you.

That was the message Lithuania sent to Russia Friday as it published a manual for its three million citizens on how to defend their homeland in the event of invasion.

Since Russia annexed Crimea two years ago, Lithuanians have been on edge.

Conscription has been restarted and defense spending ramped up, not to mention their now-answered calls for NATO to deploy more troops to the Baltics.

But even this is not enough to assuage anxiety -- the Lithuanian government has Friday issued a 75-page guide on what to do if the country is invaded, entitled "Prepare to survive emergencies and war."

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