The Defense Ministry will request a record-high 5.25 trillion yen ($48.0 billion) in the initial budget for fiscal 2018 to bolster security measures against North Korea’s military provocations and China’s maritime advances.

The amount is up 130 billion yen, or 2.5 percent, from the ministry’s total in the initial budget for fiscal 2017.

With Pyongyang continuing to fire ballistic missiles and Beijing trying to expand its reach in the East China Sea, the ministry plans to build upgraded destroyers and submarines and study a possible missile system to protect Japan’s remote islands.

In light of North Korea’s belligerence, the Defense Ministry plans to buy from the United States a land-based Aegis Ashore interceptor missile system as a centerpiece of the Ballistic Missile Defense system. The specific cost is expected to be decided by the end of this year.

The ministry will also seek 19.6 billion yen to develop an anti-stealth radar system to detect ballistic missiles launched by Pyongyang, some of which are difficult to track by conventional radar.

It also wants to spend 10.7 billion yen to renovate its Japan Aerospace Defense Ground Environment automatic alert control system to further improve detection capabilities for North Korean missiles fired at lofted trajectories.

A large chunk of the budget request, 88.1 billion yen, is for the ministry’s plans to purchase six state-of-the-art F-35A stealth fighters.

To shore up defense of remote islands, the ministry is requesting 55.2 billion yen to maintain facilities for units of the Self-Defense Forces stationed on southwestern islands of Okinawa Prefecture.

The ministry also wants 10 billion yen to study the development of a high-speed glide bomb for use in contingencies on such islands.