Hatoyama DPJ — regime change and Futenma collapse

Doctrine — stated goals and content

DPJ regime-change doctrine — first full non-LDP majority government since 1955. Hatoyama's programme rested on a redistributive-Keynesian platform ("people's livelihoods first") funded by wringing waste from the bureaucracy ("shiwake" public budget-screening process run by Renhō in November 2009) rather than tax hikes: new child allowance (¥13,000/month per child phased in April 2010), high-school tuition-free policy (April 2010), highway-toll-free experiments, and farmer income-compensation scheme (kobetsu shotoku hoshō, FY2010 start). Institutional doctrine shift was seiji-shudō — political leadership over bureaucracy — abolishing administrative vice-minister meetings and empowering politically-appointed national strategy bureau. Foreign-policy doctrine was "equidistance" between US and China and an East Asian Community vision; collapsed over Hatoyama's mishandling of the Futenma Marine Corps base relocation on Okinawa, where he repudiated the 2006 Guam-relocation agreement, floated off-island alternatives, then capitulated back to Henoko in May 2010, triggering SDP exit from coalition. Popularity fell from ~75% to ~20%; combined with Ozawa political-funds scandal, Hatoyama resigned 2 June 2010. Coherence line: ambitious fiscal-redistribution + bureaucratic-politicisation programme, blown up by foreign-policy amateurism.