Canadians told to "Exercise a high degree of caution in Germany"

The map in which the entirety of germany is yellow and the legend says that yellow means "exercise a high degree of caution" while the surrounding countries are gray, is awfully misleading. The map for france looks the same[1], with germany gray. The logic seems to be: This is the page for germany, the image only shows data about germany. In that case, other countries shouldn't be shown at all, rather then in gray.

[1]: https://travel.gc.ca/destinations/france

The high degree of caution due to the threat of terrorism is also for France, UK, Spain, Belgium, Sweden, and also some non European countries.

From who? Iran & it's proxies?

‘Due to the high threat of terrorism’*

*not specified