The US president Barack Obama attended a memorial ceremony marking the 12th anniversary of 9/11 attacks outside the Pentagon, one of the crash sites. The president said the Americans must help defend the country as long as there are constant threats from terrorists and reiterated the need of using force against Syrian president.
Another memorial service was held at the National September 11 memorial plaza in Manhattan, New York City, with more than 1,000 people, which includes the families of the victims, attended. The ceremony was comprised of bell ringing and several moments of silence, including 8:46 local time (19:46 GMT), when American Airlines Flight 11 crashed into the North Tower of World Trade Center.
9/11 attacks have pushed the US to declare war on terrorism after Osama Bin Laden, the founder of Al-Qaeda, proclaimed responsible for the attacks, which later led to the US joining the wars in Iraq and Afghanistan.