The International Monetary Fund (IMF) has cut its forecast for global growth this year, because of a slowdown in the United States.
The IMF is forecasting growth for the world economy of 3.3 percent in 2015, compared with its previous forecast of 3.5 percent.
Last month it lowered its forecast for the US to 2.5 percent for 2015, from an earlier forecast of 3.1 percent.
This was because of an unexpected dip in activity in north America in the first three months of the year.
The IMF is forecasting global growth to rise to 3.8 percent next year.
"As dramatic as the events in Greece are the effects on the rest of the world economy from the further suffering of the Greek economy are likely to be limited," says IMF's Director of Research Olivier Blanchard. "Of course, we continue to hope for and work toward a positive solution by which Greece remains in the Eurozone."
After the report's release, Mr Blanchard told the BBC that he did not expect the sell-off on the Chinese stock market to have major consequences for the world economy.
The IMF is predicting China will grow by 6.8 percent this year and 6.3 percent next year.
China's main Shanghai Composite Index rose 5.8 percent yesterday.