"The continued presence of Iranian [military] advisers in Syria was part of this military cooperation agreement between Tehran and Damascus," Tehran's military attache to Damascus, Abolqasem Alinejad says.

"I have repeatedly asked people to inform us if they know of any dual nationals. The Intelligence Ministry's anti-espionage unit has successfully identified and arrested dozens of spies in different governmental bodies," Iranian Intelligence Minister Mahmoud Alavi says.

"We will be a donor if it [UNRWA] reforms what it does. If they actually change the number of refugees to an accurate account, we will look back at partnering them," Haley says.

"The United States has accepted the invitation from UN Special Envoy for Syria Staffan de Mistura to participate in talks in Geneva on Sept. 14," a State Department official says.

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