Core Viewpoint - The article discusses the ongoing "carrier conversion" of Japan's Izumo-class helicopter destroyers, particularly the Izumo and Kaga, which are being modified to operate F-35B stealth fighters, raising concerns about Japan's military expansion and potential revival of militarism [1][3][5]. Group 1: Military Developments - Recent satellite images reveal significant progress in the conversion of the Izumo-class destroyer, with modifications to its bow structure to facilitate F-35B operations [3]. - The Japanese Ministry of Defense plans to complete the modifications of the Izumo and Kaga by the fiscal years 2027 and 2028, respectively, to support F-35B operations [3][5]. - The conversion process is divided into two phases, with the first phase for Izumo completed between March 2020 and June 2021, and the second phase starting in 2024 [5]. Group 2: Strategic Implications - The modifications will allow the Izumo and Kaga to support U.S. Navy vessels, enhancing Japan's role as a key ally under the "First Island Chain" strategy [5]. - The Izumo-class vessels have been reclassified from helicopter destroyers (DDH) to multi-purpose cruisers (CVM), indicating a shift towards more offensive capabilities [5]. - Military experts express concerns that Japan's military enhancements could destabilize regional security and challenge international order [7][8].