Okay, now he can't move them

Assad, that is. His chemical weapons. Because he's signed the Chemical Weapons Convention and declared them.  In the LA Times, Shashank Bengali reports:

Syrian President Bashar Assad has disclosed the locations of dozens of poison gas production and storage sites to international inspectors, according to Western officials.

Officials familiar with Assad's disclosure — the first step in complying with an ambitious U.S.-Russian plan to seize and remove or destroy his arsenal of chemical weapons by mid-2014 — described it Tuesday as "a serious document" that comprises scores of pages and is surprisingly thorough.'

Information in the closely guarded document roughly tracks with U.S. intelligence estimates that Syria has about 45 sites used to produce or store illicit blister agents or neurotoxins...Syria submitted the declaration over the weekend to the Organization for the Prohibition of Chemical Weapons, the implementation and compliance arm of the Chemical Weapons Convention.

The OPCW administers the Chemical Weapons Convention. The Convention stipulates (Article IV, paragraph 4) that once such a declaration is made,

So, Congress, how 'bout that AUMF?

Remember the alternative AUMF proposed by Senators Manchin and Heitkampf?

The Manchin-Heitkamp resolution* calls for two primary things. First, it gives the administration 45 days to secure from Syrian President Bashar al-Assad a commitment to join those nations who have signed and agreed to the Chemical Weapons Convention. If Assad fails to comply, then the Senate gives full authorization to the president to use whatever means possible to respond to the regime's apparent August 21 use of chemical weapons.

So now, thanks to the U.S.-Russian agreement on a Framework for the Elimination of Syrian Chemical Weapons, Assad  has already acceded to the Chemical Weapons Convention. And he will be required to provide an inventory of Syria's CW arsenal within seven days of ratification by the Organization for the Prohibition of Chemical Weapons of a draft decision to be provided by the U.S. and Russia "within a few days." Once that inventory is provided, the Chemical Weapons Convention forbids moving any weapons, "except to a chemical weapons destruction facility" (Article IV, paragraph 4). Inspections are to begin in November, and the framework, as the FT puts it, "is structured around a series of deadlines which will allow the world to judge whether it is being adhered to or not." The framework also stipulates enforcement under Chapter 7 of the U.N. Charter, which authorizes the Security Council to use both non-military and military means.

What the agreement (already famously) does not do is effectively pre-authorize military action in the event that Syria violates the agreement.  Whether this kind of agreement could be so structured, I don't know, but the Russians have made it clear that they will block any future call for a Security Council resolution authorizing force.