The report’s release isn’t expected to stop Russia and the West from wrangling over who is to blame.
On Tuesday evening, Taliban units threatened the Kunduz airport, thwarting efforts by Afghan troops to overcome one of the militant group’s biggest offensives in the 14-year war.
The tragedy, the deadliest in 25 years, was the second major incident to hit this year’s pilgrimage.
For decades, officials have struggled with the crush of Muslim pilgrims converging on Mecca’s holy sites.