Four months after the Benghazi attack, the official refrain on the search for those responsible was the same.
"We continue to hunt the terrorists responsible for the attacks in Benghazi and are determined to bring them to justice," Clinton said.
Clinton was also cautious in the way she described the attack, citing the unclassified version of the administrative review board she appointed to investigate the attack.
"There's evidence that the attacks were deliberate, opportunistic and pre-coordinated but not necessarily indicative of extensive planning," she said.
Clinton was also asked about a New York Times report Wednesday quoting an Algerian official that some of the attackers on the gas plant last week had also been involved in the Benghazi attack, according to interrogations of the surviving attackers.
Clinton was noncommittal, saying "that would be a new thread." There was no way to confirm the information, and the administration would do everything possible to find out more, she pledged.
Clinton stressed repeatedly that the United States had to lead the way in providing security assistance in vulnerable nations.
"It's not going to be easy," she said, "because these new countries have no experience with democracy, they don't have any real experience among the leaders in running countries, in doing security."
In Libya, for example, there was willingness to improve security, but no capacity.
"We sent teams out -- both civilian and military -- experts to try to help them. Until recently, while they were going through their transition it was a very difficult conversation, because they didn't have the authority."
She pointed to the example of Colombia, where U.S. assistance over a 10-year period had reduced the threat of terrorist and paramilitary groups.
She also pointed to progress in Somalia, where U.S. funding and training for African troops in the capital and support for the intervention by Kenyan forces had helped push back al-Qaida affiliate al Shabaab.
But "it took time. There were no short cuts," she said.
"We are in for a long-term struggle here and that means we've got to pay attention to places that historically we have chosen not to or had to."
One important platform for delivering security assistance would be the U.S. Africa Command. Ten years ago, Clinton said, people had wondered why the United States needed a new military command. Now there should be more attention on how and where it was resourced.
"We don't have assets of any significance right now on the African continent. We're only building that up," Clinton said.