JOIN USAddressing a gathering at a 'Voices of September 11th' event, Clinton said even though the US has "thankfully" not witnessed another terror attack following 9/11, terrorists continue to take lives in countries across the world.
"Even though the United States, thankfully, has not experienced another attack since 9/11, London has, Madrid has, Mumbai has, Islamabad has, Jakarta, Bali – other places continue to be attacked.
"We do have to recognise that we are engaged in a long-term struggle to face down and defeat the murderous ideology that continues to incite violence around the world," she said.
Clinton said America's fight against terrorism did not end with Osama bin Laden's death and the country will not rest until all those who were part of planning and facilitating the attacks are "similarly brought to justice".
"I can tell you it was a particular satisfaction for me, as a former senator of New York, to be in the team in the Obama Administration that made sure bin Laden was brought to justice".
The US will use every tool in its arsenal, including never giving up its right to use military force, to capture and kill terrorists and disrupt cells and conspiracies, she said.
"We do not just want to capture and kill terrorist leaders. We want to make them irrelevant. We want to prevent them from attracting new recruits. We want to end the attraction they have for young people," she added. US diplomats are out in the field and in cyberspace exposing al-Qaeda's hypocrisy and brutality and the enormous toll it has inflicted on Muslims, Clinton said.
These violent extremists are not representing any religion, but are representing "evil and nihilism," and they need to be stopped by all people, she said.
The State Department is working with a coalition of other nations to choke off the illicit financing networks that pay for terrorist training camps, propaganda and operations.
The US is helping build capacities of other nations to deal with terrorist threats, besides training thousands of police and anti-terrorism officials across the globe.
"We are creating new forums for nations to deepen our counterterrorism cooperation".
Progress has been made but the terror threats in New York and Washington in the run up to the 9/11 anniversary are "one more reminder that we still face danger and we have to stay vigilant".
"We have to keep our eye on what we are fighting against, but we also have to remember what we are fighting for".
Clinton had earlier in the day visited the 9/11 Memorial at the World Trade Centre site, terming it a place that helps people to reflect, remember and be close to their loved ones.