This week French officials, European spy chiefs and other reports warned that Russia is preparing more direct action against NATO countries.
This week Finland finished a 200-kilometre border fence, Latvia's ban on Russian and Belarusian books and goods took effect, and Germany and Russia expelled diplomats after a drone was found near a plane at a German airport.
German police investigating a failed drone attack on Leipzig airport have found that one suspect lived in Russia for years, according to the newspaper Welt.
In one week, four separate incidents added to a pattern of suspected Russian hybrid warfare against European countries.
In one week, NATO jets shot down an explosive-laden drone that entered Latvia from Belarus, the US scaled back a major annual drill with South Korea, and a former Finnish prime minister warned Europe would react slowly to Chinese pressure on Taiwan, unlike its fast response to Russia's invasion of Ukraine, because the EU's decades-old one China policy avoids taking a clear stand on Taiwan.
Latvia's prime minister, Andris Kulbergs, has asked the European Union for 7 billion euros to help cover costs from Russia's war against Ukraine, saying countries near Russia carry too much of that burden.
NATO fighter jets shot down a drone that crossed into Latvia near its border with Russia and Belarus on Friday.