Definition of "Intervene" :

verb: occur between other event or between certain points of time

"The war intervened between the birth of her two children."

verb: get involved, so as to alter or hinder an action, or through force or threat of force

"Why did the U.S. not intervene earlier in WW II?."

verb: be placed or located between other things or extend between spaces and events

"This interludes intervenes between the two movements."