Complex sentence: Working on this intelligence, the human militia plan to launch an offensive against the Skynet base in San Francisco in four days; in response to an intercepted "kill list" created by Skynet with a plan to terminate the Resistance's command staff.
Split into simpler sentences: Working on this intelligence, the human militia plan to launch an offensive against the Skynet base in San Francisco in four days. This is in response to an intercepted kill-list created by Skynet with a plan to terminate the Resistance's command staff.