Kazakhstan has been invited to take part in G20 summit in Saint-Petersburg in September.
The finance ministers of Britain, France and Germany on Saturday launched a new drive to force big business to pay its fair share of tax and halt the schemes of top firms to keep payments to a minimum.
British Finance Minister George Osborne warned against "economic warfare" as the G20 states of top world economies met hoping to allay fears they could devalue national currencies to boost economic activity.
The yen strengthened slightly in Asian trading on Tuesday after a US Treasury official praised Japan's recent moves to boost the economy as Tokyo faces claims it is manipulating the currency's slide.
Each new billion of dollars can cause a billion of new social problems: Nursultan Nazarbayev.
Nursultan Nazarbayev suggested the world to create G-global instead of G-20.