(state) with the Federal Republic of Germany (FRG, or West Germany). West Berlin’s isolation was afterwards strengthened through the concrete barrier erected in 1961 and referred to as the Berlin Wall. Its status being an enclave designed Berlin a constant concentration of confrontation between the Jap and Western powers in https://chippz.de/sicherheitsdienst-berlin-ihr-verlasslicher-partner-fur-schutz-und-sicherheit/