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Security forces point their weapons through a shattered door behind which an unexploded grenade lies, at a hotel complex in Nairobi, Kenya, Tuesday, Jan. 15, 2019. Terrorists attacked an upscale hotel complex in Kenya's capital Tuesday, sending people fleeing in panic as explosions and heavy gunfire reverberated through the neighborhood. (AP Photo/Ben Curtis) Members of the Kenyan National Police Crisis Response Team, trained by the U.S. Department of State’s Antiterrorism Assistance program, advance in tactical formation to the attack scene in Nairobi, January 15, 2019. Behind the shattered glass door lies an unexploded grenade. (AP/WideWorld Photos)

U.S. Department of State

The Lessons of 1989: Freedom and Our Future