The Hamas tunnels are still undermining Israel's attempt to defeat the organisation

The tunnels and underground bunkers under Gaza are so complex and so comprehensive that it seems impossible for the Israel Defence Forces to carry out what they have been ordered to do which is to destroy everything to do with Hamas. Israel knew all about the tunnels but even their intelligence services appear to have underestimated the size of the underground network. It's an extraordinary feat of engineering which must have taken years to complete. Entering every tunnel is dangerous for the IDF as they hunt for Hamas leaders and for the remaining 108 hostages. They've tried every way of finding and destroying the tunnels but a vast number are still in existence which is why the Hamas overall leader Yahya Sinwar is still alive and still in charge and still stopping Israel from achieving the victory it so desperately wants. As the IDF has discovered this week, when they enter tunnels they can suddenly come across a hostage. The latest discovery saved one more life but it demonstrated how carefully the IDF commandos have to be every time they go down a tunnel. They can't blast their way in because of the risk of killing a hostage. Perhaps one of these days, Israeli commandos will enter a bunker and find Sinwar sitting there. But I suspect he always keeps one step ahead of the IDF. It's an extraordinary cat and mouse game.