Prime Minister Shinzo Abe may continue his pursuit of extreme monetary easing until this summer's Upper House election, despite skepticism about whether his policy has gotten the nod from the Group of 20 countries.

In Moscow on Saturday, finance ministers and central bank chiefs of the G-20 major economies adopted a harder line against governments trying to manipulate exchange rates, in a bid to tame speculation of a global currency war while avoiding singling out Japan for criticism.

The meeting ended with a pledge from the finance leaders not to "target our exchange rates for competitive purposes."