 Image copyright Getty Images Image caption Knowledge of geography is not an American strength 
 
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 A recent survey conducted by three US college professors found that only one in six Americans could find Ukraine on a map of the world.  TORONTO (AP) — It began with Canada tweeting some not-so-friendly travel tips for the Russian military: a map showing Russia and labeling Ukraine as "not Russia."
– Canadian officials had a message for Vladimir Putin this week: Here's where Russia isn't. NATO delegates from Canada tweeted a simplified map Wednesday that delineates Russia's borders, calling Russia "Russia" and Ukraine (including the Crimean region) "not Russia," the AP reports. "Geography can be tough," reads the message, which has been retweeted more than 36,000 times as of this writing. "Here's a guide for Russian soldiers who keep getting lost and 'accidentally' enter Ukraine." Russia still insists it isn't invading Ukraine, and says the only Russian soldiers to cross over were 10 guys who did so by mistake earlier this week. In fact, Russia's NATO delegation tweeted its own map showing the Crimean peninsula as belonging to Russia: "Helping our Canadian colleagues to catch up with contemporary geography of #Europe," it reads. Yet Russia's map "conveniently left unillustrated" the part of eastern Ukraine where the 10 Russian soldiers were said to be captured, the BBC notes. So, all of this was sparked by friendly old Canada? "This is probably the most aggressive Canadian act since like 1812," cracked one tweeter. But some Americans need help even finding Ukraine, according to one study: Only 16% could spot it on a map, and over 100 of the 2,066 participants figured it was near Greenland—or, appropriately, Canada, the BBC reports. (A Bulgarian artist created maps that depict typical American stereotypes of countries across the pond.)