This is the best summary I could come up with:

ZEELIM GROUND FORCES BASE, Israel, Nov 16 (Reuters) - After locating what they described as the entrance to a Hamas tunnel under an evacuated hospital in northern Gaza, Israeli army engineers filled the passage with exploding gel and hit the detonator.

The blast engulfed the building and sent smoke spewing out of at least three points along a nearby road in a district of the city of Beit Hanoun, surveillance footage showed.

“The gel spread out and exploded whatever they had been waiting for us in the tunnel,” an army officer told reporters at a briefing at Zeelim Ground Forces Base in southern Israel.

When not using munitions to map out the bunkers, access shafts and tunnels which both sides say run for hundreds of kilometres (miles) under Gaza, the army opts for tracker robots and other technology operated remotely.

Israel’s policy, he said, was not to send personnel in the other direction to confront Palestinian fighters who would have a defender’s advantage in narrow, dark, under-ventilated and collapsible passages with which they were familiar.

“The only population left is the terrorists,” the officer said, adding that sometimes a secondary explosion set off by a tunnel destruction blast “will bring down a building a few hundred metres away”.

The original article contains 752 words, the summary contains 208 words. Saved 72%. I’m a bot and I’m open source!