Japan is getting ready for a fight.

Maneuver Combat Vehicle.

Amphibious Assault Vehicle.

F-35.

via Janes.

The budget request for Fiscal Year 2013 (FY13) announced by the Japanese Ministry of Defence (MoD) on 7 September is the lowest in 22 years but also includes new capabilities such as amphibious assault vehicles, new communications suites and two more Lockheed Martin F-35A Lightning II Joint Strike Fighters.
The request, which will be sent to the Finance Ministry for consideration ahead of a decision later in the year, prioritises the protection of Japan's remote island chains and maritime surveillance: considerations that have grown in importance during a series of territorial disagreements with China and South Korea.
"The country's fiscal situation is under pressure due to the increase of outstanding government bonds and rising social security costs," Koji Yoshino, the principal deputy director at the MoD's planning and programming division, said on 6 September. "We would like to secure the funds we need while also trying to reduce spending in an effective and efficient manner."
The most notable request was for four amphibious assault vehicles (AAVs) – with the US Marine Corps' AAV-7 series mentioned as a potential platform – for which the Japan Ground Self-Defense Force (JGSDF) requested JPY2.5 billion (USD31.8 million).

Most notable to me is the fact that Japan has a choice of amphibious vehicles and has chosen not to go the wheeled route when it comes to amphibious assault vehicles.

I also note that Brazil also has experience in using wheeled amphibious assault vehicles and has chosen to purchase more AAVs.

Besides the AAV, and F-35 purchases the Japanese are developing three other armored vehicles.  A Light Combat Vehicle which is in essence a wheeled artillery platform.  A Maneuver Combat Vehicle armed with a 105mm gun in a manned turret and a new Tank.

Japan is gearing up for a fight.