international support for military action which was less than mr. obama had hoped for at the g-20 summit in russia. the president s critics say he squandered time he could have used to draw domestic support, first drawing red lines and denying syria crossed them. assad used them almost a year ago and we didn t get involved then. probably should have done something sooner. reporter: the president heads back to capitol hill on tuesday for separate lunches with the democratic and republican caucuses in the senate. there are more than enough undecided votes in both the house and the senate to swing the vote either way. bret? thank you. please join us tomorrow night for the president s primetime address. we ll start our coverage at 8:55 p.m. eastern time with the president beginning at 9:00 eastern. still ahead, what the u.s. can expect in retaliation if it hits syria. first, running the numbers, counting the heads for the president s syria authorization in congress.