On Friday Secretary General Ban Ki-moon stepped up the pressure on Syria to allow investigators to look into the alleged chemical weapons use.
More than a thousand civilians were killed in a suspected chemical weapons attack on Wednesday. Ban Ki-moon hinted that a military response may be necessary, saying use of chemical weapons would result in "serious consequences."
"Any use of chemical weapons anywhere by anybody under any circumstances would violate international law," Ban Ki-moon said.
The Syrian government denies it has used chemical weapons, and blames the attack on rebel forces. The U.S. maintains the rebels do not have the capability to produce chemical weapons.
The United States is moving cautiously with President Obama ordering the intelligence community to find the facts in the case before he decides a course of action.
The last time the U.S says Syria used chemical weapons, the president authorized a shipment of weapons to rebel forces. Two months have passed and not a single bullet has been delivered.
President Obama has reportedly ruled out putting American troops on the ground, but a no-fly zone over Syria could still be an option.
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