Russia's Deputy Foreign Minister Sergei Ryabkov talks behind microphones as he addresses a news conference in Damascus
Russia's Deputy Foreign Minister Sergei Ryabkov talks behind microphones as he addresses a news conference in Damascus June 28, 2014. Ryabkov, on a trip to Damascus, calls for a united effort with the U.S. and Europe to combat militancy in the Middle East. REUTERS/Omar Sanadiki (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Russia's Deputy Foreign Minister Sergei Ryabkov addresses a news conference in Damascus
Russia's Deputy Foreign Minister Sergei Ryabkov sits near the Syrian national flag as he addresses a news conference in Damascus June 28, 2014. Ryabkov, on a trip to Damascus, calls for a united effort with the U.S. and Europe to combat militancy in the Middle East. REUTERS/Omar Sanadiki (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Residents inspect damage due to what activists claimed was a car explosion in a market in central Douma
Residents inspect damage due to what activists claimed was a car explosion in a market in central Douma in eastern al-Ghouta, near Damascus June 28, 2014. Dozens of people were wounded when the car bomb exploded on Saturday, local activists and a monitoring group said. REUTERS/Bassam Khabieh (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Residents inspect a wrecked vehicle due to what activists claimed was a car explosion in a market in central Douma
Residents inspect a wrecked vehicle due to what activists claimed was a car explosion in a market in central Douma in eastern al-Ghouta, near Damascus June 28, 2014. Dozens of people were wounded when the car bomb exploded on Saturday, local activists and a monitoring group said. REUTERS/Bassam Khabieh (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT TRANSPORT)
Residents ride their bicycles over debris due to what activists claimed was a car explosion in a market in central Douma
Residents ride their bicycles over debris due to what activists claimed was a car explosion in a market in central Douma in eastern al-Ghouta, near Damascus June 28, 2014. Dozens of people were wounded when the car bomb exploded on Saturday, local activists and a monitoring group said. REUTERS/Bassam Khabieh (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
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Civil defence members try to put out a fire after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus
Civil defence members try to put out a fire after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus June 28, 2014. Dozens of people were wounded when a car bomb exploded in the Syrian town of Douma, northeast of the capital Damascus, on Saturday, local activists and a monitoring group said. REUTERS/Mohammed Abdullah (SYRIA - Tags: CIVIL UNREST CONFLICT)
Civil defence members and residents try to put out a fire after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus
Civil defence members and residents try to put out a fire after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus June 28, 2014. Dozens of people were wounded when a car bomb exploded in the Syrian town of Douma, northeast of the capital Damascus, on Saturday, local activists and a monitoring group said. REUTERS/Mohammed Abdullah (SYRIA - Tags: CIVIL UNREST CONFLICT)
Resident gathers scattered produce beside a wrecked vehicle after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus
A resident gathers scattered produce beside a wrecked vehicle after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus June 28, 2014. Dozens of people were wounded when a car bomb exploded in the Syrian town of Douma, northeast of the capital Damascus, on Saturday, local activists and a monitoring group said. REUTERS/Mohammed Abdullah (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT)
Civil defence members try to put out a fire after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus
Civil defence members try to put out a fire after what activists claim was a car explosion in a market in central Douma in the eastern al-Ghouta, near Damascus June 28, 2014. Dozens of people were wounded when a car bomb exploded in the Syrian town of Douma, northeast of the capital Damascus, on Saturday, local activists and a monitoring group said. REUTERS/Mohammed Abdullah (SYRIA - Tags: CIVIL UNREST CONFLICT)