Following recent reports that Obama has changed his posture on Syria, news has broken that Obama is putting Assad on notice regarding the use of chemical weapons. Obama said Assad's government will be "held accountable if they make the tragic mistake of using those weapons."
The Syrian government, in return, is promising they won't use the weapons on opposition forces, although they are suggesting they may use them on "foreign invaders," i.e., U.S. troops, the Israeli military, or others who might come in to help wrest control of the government from Assad.
The Pentagon has also sent messages to Assad and his government through various channels, warning them not to even think about using the weapons.
No word yet on what type of retaliation Obama plans to take if Assad and his government do in fact use the weapons.