TOKYO -- Russia's unprovoked military aggression against Ukraine has come as a dire security warning for many countries. The horrifying destruction and huge casualties Ukraine has suffered have prompted political leaders around the world to start rethinking their security policies and strategies.
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Russia's Ukraine invasion serves as wake-up call for Japan
War underscores urgency of buttressing nation's defense system and alliances
Russia's invasion of Mariupol and other parts of Ukraine has given Japanese Prime Minister Fumio Kishida three important lessons. (Source photos by Uichiro Kasai and Reuters)
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