During next 100 days, Obama will experience Jupiter/Mars/ Rahu period between 13th April,2009 till 4th June, 2009.

I have already commented on the significance of Violence implied in Rahu/Mars combination in 8th house of his chart. In domestic front he will also have to face the challenge of how to decrease the Swine Flu epidemic spreading all over the world which has originated in USA during the Jupiter- Mars/Rahu period.
Internationally he has already initiated moves to reach out to Iran to bring their sobering influence on Taliban in Afghanistan.
He is likely to take decisive steps to fight the Taliban and to neutralize it’s threat both in Afghanistan and Pakistan. He has already managed to convince Pakistan to fight and confront the Taliban and terror elements operating inside Pakistan.

However, this will also create a backlash from Taliban and their allies, and USA itself may become targets for terror attacks from them.

I can quite imagine the tension, stress and conflict that president Obama is experiencing internally. His external appearance, speech and body language will remain as calm and inspiring as ever.

However in my opinion during the next 100 days President Obama will face his biggest challenges.