President Obama says Osama bin Ali had a secret base within Pakistan . Pakistani authorities need to investigate how bin Laden hid in their country , aide says . Former Bush CIA Director Michael Hayden appeared to agree with Kerry 's assessment of the situation created by the raid . Top members of Foreign Relations Committee say importance of U.S.-Pakistan ties . Pakistan 's U.S. Ambassador says an investigation is underway and ` ` heads will roll ''
President Obama says Osama bin Ali had a secret base within Pakistan . Pakistani authorities need to investigate how bin Laden hid in their country , aide says . Top members of Foreign Relations Committee say importance of U.S.-Pakistan ties . Pakistan 's U.S. Ambassador says an investigation is underway and ` ` heads will roll ''