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“He can tell the Europeans to take care of their own problems, and he can say that all he wants,” said Irene Kyriakopoulos, a scholar on Europe and economics at the Woodrow Wilson International Center in Washington.

“The U.S. can’t do much about this crisis. It is totally a European problem.”

On Thursday, Mr. Obama will meet separately with Mrs. Merkel and Mr. Sarkozy. He also will take part in a meeting with international labor leaders.