Bank of Japan Gov. Haruhiko Kuroda on Thursday revealed his strategy for ending more than a decade of deflation by expanding the central bank's purchases of government bonds and allowing it to buy riskier assets.

The bank will "enter a new phase of monetary easing in terms of quantity and quality," Kuroda said in explaining that the moves will double Japan's monetary base and the amount of outstanding Japanese government bonds and exchange-traded funds within two years.

"This is coming from a different level in both quality and quantity," Kuroda told reporters after the two-day Policy Board meeting. "We have put forward everything there is to do at this point," he said.