A nuclear-armed North Korea is practically next door. But "Japanese politicians must navigate delicate domestic politics and a complicated relationship with its closest ally, the United States, as it embarks on selective military improvements," our buddy David Axe notes in a new piece for World Politics Watch and War is Boring. Take fighter jets, for instance.

In February, the U.S. Air Force deployed a dozen of its $300-million F-22 Raptor fighters, built by Lockheed
Martin, to Kadena, a U.S. base on the southern Japanese island of
Okinawa. The F-22 boasts the ability to fly long distances and drop satellite-guided bombs from high altitudes onto well-defended targets; the fighter is a key facet of U.S. upgrades to its Pacific forces, which include 47,000
troops at bases in Japan – most of them in Okinawa. The deployment provoked repeated protests by Japanese peace groups and has attracted a great deal of negative press, according to base spokesman John Monroe.
“There is no good news,” he says of the local media environment.