NATO must abandon decades of network-bound, proprietary command systems and shift to a cloud-based method of sharing and processing data if it wants to defend Europe against rapidly evolving drone and missile threats, a senior alliance official said in a call for sweeping policy change. Tom Goffus, NATO's assistant secretary general for operations, said the alliance already has enough sensors spread across member states to track many air threats but cannot exploit them because the data sits inside incompatible systems...