Kathmandu, Sept. 16 -- This week marks the 20th anniversary of the September 11, 2001, terrorist attacks on the United States. On that day, 19 terrorists took control of four civilian aircraft, flew two into the towers of New York's World Trade Center, struck the Pentagon with a third, and crashed the fourth in a Pennsylvania field after passengers physically prevented the terrorists from reaching their target, often thought to be the White House or another US government building in Washington, DC.

All the hijackers were from the Middle East, 15 from Saudi Arabia alone. All were trained in Afghanistan, and four at US flight schools, as part of an operation planned, organised, and carried out by al-Qaeda (the "base"), the terrorist group ...