Tokyo Governor Champions Global City Partnerships in Strategic European Tour
Paris, Friday, 6 March 2026.
As the new chair of the OECD city coalition, Governor Koike solidified Tokyo’s global influence in Paris and Rome, advocating for cross-border collaboration to tackle urban climate challenges.
Elevating Subnational Diplomacy in an Age of Uncertainty
Tokyo Governor Koike Yuriko is leveraging her recently appointed position as Chair of the OECD city leaders’ coalition to drive a new era of subnational diplomacy. Assuming the chairmanship in January 2026, Koike has utilized her platform to advocate for “multicity lateral cooperation” as a critical mechanism for addressing global instability [1]. During her visit to the OECD headquarters in Paris on February 4, 2026, Koike addressed the OECD Champion Mayors Leadership Strategy Meeting, emphasizing that major metropolitan areas must lead the charge in solving issues ranging from the climate crisis to natural disasters [1]. Describing the current geopolitical and economic landscape as “an age of profound uncertainty,” Koike argued that stronger intercity cooperation is indispensable for enhancing urban resilience [1]. This strategic pivot towards multilateral city engagement follows her previous diplomatic efforts in Washington D.C. and New York City in July 2025, signaling a consistent trajectory in Tokyo’s foreign policy [1].
Strengthening European Bilateral Ties
Beyond the multilateral stage, the Governor’s European tour focused on fortifying bilateral economic and cultural bridges, specifically with Rome. On February 5, 2026, Koike met with Rome Mayor Roberto Gualtieri to commemorate the 30th anniversary of the friendship pact between the two capitals [1]. This high-level meeting resulted in the signing of a joint communiqué aimed at enhancing future cooperation, building upon groundwork laid during Mayor Gualtieri’s visit to Tokyo in September 2025 [1]. The dialogue extended into technical exchanges, with Koike receiving briefings on Rome’s “Smart City” initiatives, including the deployment of the AI virtual assistant “Julia” [1]. Koike noted that these innovations in tourism and daily citizen convenience offer valuable insights for Tokyo, highlighting the reciprocal nature of this modern urban diplomacy [1].
Fostering Innovation and Economic Exchange
A central pillar of Koike’s diplomatic agenda is the promotion of Tokyo’s startup ecosystem, particularly through the “SusHi Tech Tokyo” initiative. With the 2026 edition scheduled for April 27-29 at Tokyo Big Sight, Koike utilized her European presence to attract international participation, drawing parallels with Paris’s upcoming Viva Technology conference in June 2026 [1]. The economic implications of these events are significant; the 2025 edition of SusHi Tech attracted 57,000 participants from 100 countries [1]. Analytical review of the event’s performance shows a high level of commercial engagement, with the 6,136 business matching meetings recorded representing a connection rate of approximately 10.765% relative to the total attendee base [1]. Koike’s promotion of these platforms underscores a strategy to position Tokyo not just as a policy leader, but as a central hub for global innovation and business matching.
From Rhetoric to Action: Domestic Decarbonization
While advocating for climate resilience abroad, the Tokyo Metropolitan Government (TMG) is simultaneously advancing tangible decarbonization measures at home. Aligning with Koike’s statement that there is “no time to waste” on decarbonization, the TMG has set a target to achieve 100% non-gasoline sales for new motorcycles in Tokyo by 2035, aiming for zero emissions by 2050 [2]. This policy was visibly demonstrated during the Tokyo Marathon 2026 on March 1, where the lead vehicle was a newly introduced electric police motorcycle based on the Honda WN7 [2]. These vehicles, which debuted during the Hakone Ekiden in January 2026, feature performance comparable to 600cc internal combustion engines and torque rivalling 1000cc classes, validating the operational viability of electric fleets in demanding public safety roles [2]. This deployment serves as a practical proof-point to the urban resilience strategies Koike championed during her OECD address [1][2].