In other news
BNP Paribas bank has revealed a net loss for the second quarter, holed by charges for a record US fine for sanctions busting.
Russia's second-largest oil producer Lukoil says Western sanctions would force the company to reduce its investment programme.
US stock index futures have pointed to a sharply lower Wall Street open, with the
Dow and S&P 500 likely to turn negative for the month.
Europe's FTSEurofirst 300 index of top shares has slipped to a two-week low, led lower by Adidas after the group warned about business in Russia.
Kenya's statistics office says the country's inflation rate has crept up to 7%, just a touch higher than predicted.
Europe's top human rights court has awarded shareholders $2.6bn in damages, a new blow to Russia on the brink of recession.
A food safety scare in China is testing local consumers' loyalty to foreign fast-food brands, including McDonald's, KFC and Pizza Hut.
Chinese police have seized almost 12 tonnes of yoghurt sweets tainted with melamine, an industrial chemical at the centre of a scandal in which six infants died.