As the world marches closer to war, countries in Europe are rushing to educate and prepare their civilian populations for military conflict with Russia.

Last week, for the first time since World War II, Sweden’s government announced that it would soon distribute some 4.7 million civil defense brochures to its citizens, warning them about the onset of war.

In the latest installment of war preparations, Estonian public broadcaster ERR reports that the government of Estonia is preparing to send some 1.3 million civil defense brochures to its citizens, with instructions of what do in the event of a significant crisis or war, said Brig. Gen. Martin Herem of the Estonian Defence Forces in an interview with Postimees.

“When it will be published, I do not know. But work is in progress,” said Brig. Gen. Herem. According to the Postimees, the Ministry of the interior is currently “coordinating work on the brochure.”

Estonia, a former Soviet republic that borders Russia, is now a member of NATO, meaning the United States and Europe are obligated by treaties to defend it. When analyst and policymakers war game scenarios between the United States and Russia, they usually point to the Estonia–Russia border as the highest probable area of where conflict in Europe could breakout besides Ukraine.

The largest Baltic state, Lithuania, in late 2016 issued a 75-page “how to survive another Russian occupation” manual for its citizens called; “Prepare to survive emergencies and war.”

All three Baltic states (Estonia, Latvia, & Lithuania) have been invaded and occupied by Russia in the past. However, the Baltic states are now under NATO control, which has made Russian aggression into Europe somewhat complicated, because it would trigger war.