"We are looking to Pakistan to take concrete actions on the goals we share: defeating violent extremism, which has also taken so many innocent Pakistani lives; ending the conflict in Afghanistan and securing a stable, democratic, prosperous future," Clinton said.
"These are obviously tough questions to ask of the Pakistanis. And there are many causes for frustration. But we should not overlook the positive steps of recent weeks since May 2. Counterterrorism cooperation continues and several very key extremists have been killed or captured," she said.
She said the US believes that no senior Pakistani officials knew of Osama bin Laden's presence. But she said it is possible that bin Laden was protected with a "wink and a nod" by lower-level officials.
"As I told the Pakistanis, America cannot and should not try to solve Pakistan's problems. They have to eventually do that themselves. But nor can we walk away from this relationship and ignore the consequences for all the reasons that Senator Lugar outlined in his opening statement," she said referring to her recent visit to Pakistan.