The target, Muhammad Deif, was one of the masterminds of the October 7 attacks and has been the target of repeated assassination attempts by Israel for decades.
Following the recent murder of a police officer, Mannheim has become a symbol of a hard line against deporting those denied asylum and who commit violent crimes.
Muhammad Deif, one of the masterminds of the October 7 Hamas attack and commander of the group's military wing, was at the center of an Israeli attack on Saturday.
Equipped with long-range missiles, Kiev is seeking to weaken Russian capabilities on the peninsula, targeting airfields, air defenses and logistics centers.