Ehud Barak stated in a CNN interview those tunnels were built "four decades ago".
The same time Israel tried to weeken socials PLO:
https://blogs.timesofisrael.com/hamas-israels-own-creation/
Der ehemalige Ministerpräsident behauptet, die Bunker unter dem Al Shifa Krankenhaus existieren, weil Israel sie selbst gebaut hat.
more videos:
Syrian Girl takes a look at Al Shifa Hospital
Israelis: Do you see non Jews as equal to you? (The ask project)
▶️ 3Speak