Original sentence: The 2001 war in Afghanistan started in October 2001, in the wake of the September 11, 2001 attacks on the United States, marking the beginning of its War on Terrorism campaign, seeking to oust the Taliban and find al-Qaeda leader Osama bin Laden
Edited sentence: The 2001 war in Afghanistan started in October 2001, in the wake of the September 11, 2001 attacks on the United States, marking the beginning of its War on Terrorism campaign, seeking to oust the Taliban and find al-Qaeda mastermind Osama bin Laden