Makes sense

Obama says the credible threat of force is what compelled Syria to accept this phony baloney plan so therefore he's asking Congress to delay the vote for that force.

Update - President Zig Zag:

This led to perhaps the most disingenuous line uttered by either Zig or Zag in the 16-minute speech, with the president claiming that he had asked Congress to postpone the vote that he earlier requested authorizing use of military force in Syria in order to let the latest diplomatic moves play out. But just a minute earlier he had asserted that a main reason diplomacy was gaining traction was because of the “credible threat of U.S. military action.” Presumably, any further diplomacy would be even more effective if Congress sent a message that it was giving Obama all options to act if the talks fail. The more plausible rationale for congressional delay is that the administration would lose the vote if it took place now.

Mm-hmm.