What to know

• The 2028 trial depends on the case meeting deadlines and milestones along the way and it could again be delayed; a trial was previously scheduled in 2021 but later cancelled.S1
• trial set for June as Khalid Sheikh Mohammed case slips againS2
• Khalid Sheikh Mohammed was considered one of Al-Qaeda leader Osama bin Laden's top lieutenants before he was captured in March 2003 in Pakistan.S3