The move is part of a politically charged investigation into the foreign financing of nonprofit groups that has shaken the 30-year alliance between the United States and Egypt.
Security forces erected two walls bisecting streets that had been central battlegrounds between security forces and protesters calling for the end of military rule.
Officials are looking for a way to remove President Bashar al-Assad from power, but to do so the United States may have to move beyond diplomatic efforts.
The rival Palestinian movements Fatah and Hamas said on Monday that they had formed an interim unity government led by Mahmoud Abbas, the Palestinian Authority president.
The actions include freezing all property of the Central Bank of Iran, other Iranian financial institutions and the Iranian government in this country.
According to Palestinian reports, an interim unity government would be led, at least at first, by Mahmoud Abbas, the current president of the Palestinian Authority.
President Obama also said he didn’t see any evidence that Iran intended to attack the United States.
