The Greek finance minister has admitted his country has only enough cash to meet its financial commitments for a "couple of weeks". Yanis Varoufakis was speaking after a meeting of his eurozone counterparts in Brussels as Greece confirmed it had scraped together enough money to make an International Monetary Fund (IMF) repayment of €750m due on Tuesday. It has been unable to shake off worries about its liquidity because of the failure to unlock €7.2bn being withheld by creditors who want financial reforms in return for the aid.