Japan’s PM Takaichi Reshuffles Cabinet, Giving Coalition Partner Its First Minister

Japanese Prime Minister Sanae Takaichi reshuffled her cabinet on 17 September 2026, keeping most senior ministers in place while giving the Japan Innovation Party (JIP), the junior partner in her governing coalition, its first-ever seat at the cabinet table. Chief Cabinet Secretary Minoru Kihara, Foreign Minister Toshimitsu Motegi, Defence Minister Shinjiro Koizumi and Finance Minister Satsuki Katayama all retained their posts, according to CGTN.

A first cabinet post for the coalition partner

Hiroshi Nakatsuka, a former secretary-general of the JIP, was appointed minister in charge of regulatory reform, becoming the first JIP figure to hold a cabinet position. Until now, cooperation between Takaichi’s Liberal Democratic Party (LDP) and the JIP had taken place outside the cabinet; the appointment formalises the coalition inside government itself. Takaichi described the move as a step in advancing the coalition to what she called a new stage, according to Nippon.com.

Security policy in the background

The reshuffle comes as the government prepares to revise Japan’s three core security documents by the end of the year, a process that could touch on acquiring unmanned systems and expanding domestic production of hypersonic missiles, CGTN reported. One analyst cited by CGTN said the JIP holds more hawkish security views than Takaichi herself and could push the coalition toward a more assertive defence posture, though this reflects the analyst’s characterisation rather than a stated government position. Observers also noted that consolidating her cabinet ahead of the LDP’s autumn leadership race could strengthen Takaichi’s position within her own party.

Why It Matters

Bringing a coalition partner into cabinet for the first time is a structural change in how Japan’s government is run, not just a personnel update. It signals how dependent the LDP has become on the JIP to govern, and it will shape the coalition’s influence over defence and regulatory policy at a moment when Japan is actively rewriting its long-term security strategy.