This bill authorizes the Secretary of Defense, in coordination with the Secretary of State, to provide assistance (including training, equipment, lethal weapons of a defensive nature, logistics support, supplies, and services) to the military and national security forces of Ukraine through September 30, 2017, to help Ukraine: (1) secure its sovereign territory against foreign aggressors, (2) protect the Ukrainian people from attacks posed by Russian-backed separatists, and (3) promote the conditions for a negotiated settlement to end the conflict.