And good evening. Im lester holt in for brian. Here in washington, talk of war and peace at the Lincoln Memorial where Martin Luther king jr. Delivered his famous i have a dream speech 50 years ago today. President obama headlined a chorus of speakers saluting the Racial Justice that changed this country. A lot more on that in a few minutes. But first, the remmings in this city about a possible military attack against syria as early as this week over its use of chemical weapons. Tonight the pentagon says the u. S. Military is ready to attack but in an interview this evening president obama says he has not made a decision to order a military strike. And new pressure on the president. The speaker of the house is demanding he make the case for any military action against syria. We want to begin our coverage with nbcs chief Foreign Affairs correspondent Andrea Mitchell in our washington newsroom. Andrea, good evening. Reporter good evening, lester. Diplomacy came to a dead end at the Unite