Khalid Sheikh Mohammed, the alleged mastermind of the Sept. 11, 2001, terrorist attacks, has expressed willingness to aid a lawsuit against Saudi Arabia by victims of the attack if the federal government does not seek the death penalty against him, according to The Wall Street Journal. Mohammed’s offer was first made public in a filing Friday as part of the federal lawsuit, which seeks to hold the Saudi government responsible for assisting in the attacks, a charge the Saudis have denied. Lawyers for the plaintiffs reportedly reached out to three of five Guantanamo Bay prisoners accused of conspiring in the...