[SamuraiScot]

Hamas's tunnels are bigger in scale than the Tube in London - what can Israel do?

I don't see a problem. I've heard the Mediterranean Sea has quite a bit of water.

[MadMax, the Grinning Reaper]

18. Using sea-water to flood the Hamas tunnel system would help solve any rising sea-water problems from melting icebergs, ice sheets and Greta Thunberg/Al Gore pissing into the rivers and oceans.