And that is our top story this midday.Hello, I'm Rosemary Shultz.A suicide car bomb turned the morning rush hour in Afghanistan's capital into chaos...The top US commander on the ground says he needs tens of thousands more troops to fight back against attacks like these...Joel Brown reports from the White House.The suicide car bomber set off his explosives at the height of this morning's rush hour, turning part of Kabul's streets into chaos.The blast killed at least 17 people and injured almost 80 more.It happened right in front of the Embassy of India. The Taliban claims responsibility.''There were lots of workers cleaning the canals,'' this man said. ''Most of them have been killed.''This is the latest in a string of attacks that have shattered the relative calm in Afghanistan's capital. Taliban fighters began ramping up the violence ahead of the elections in August and they haven't stopped.This morning's blast comes as the White House weighs a request by President Obama's top general in Afghanistan for another 40 thousand troops to fight the Taliban and stop them from giving safe haven to al Qaida.The Commander in Chief is still studying that request--and talking with top advisers about a shift in strategy.As the President considers his options, he's also faced with opposition from members of his own party to sending more troops, even it's not the full 40 thousand.Rep. Lynn Woolsey says, ''Military power alone is not the answer to our problems.''If he doesn't send more troops, he'll face sharp criticism from Republicans.Senator John McCain says, ''There has to be a significant increase in troops on the ground and there has to be an overall strategy.''President Obama will meet with his top advisors again tomorrow as he tries to decide on the next step in this increasingly unpopular war.Joel Brown, CBS News, The White House.