Japan policymaker wants stronger yen, says Tokyo shouldn't sell Treasuries / Japan's ultra-easy monetary policy hurt fiscal discipline, economists say / Yen resumes decline on doubts over Japan interest rate rises / Japan's top currency diplomat says recent yen moves are 'one-sided' / Japan's domestic spending propped up by wages and tourism / Japan interest rates, defense buildup push budget requests above $800bn / The Bank of Japan won't raise interest rates -- and then the yen carry-trade is back on, strategist says / Bank of Japan raises key interest rate to curb yen's decline / Japan's new currency diplomat keeps intervention on table to stabilize yen / Yellen suggests Japan's yen intervention differs from typical manipulation