You're right, the tunnels can't exist, for the sake of Israel's security. You're also right when you say that Sisi (a tyrant) hates Hamas and he worked to close the tunnels.
What you fail to mention is that Egypt eliminated over 1,300 illegal tunnels along their border without killing a single civilian. Israel on the other hand, murdered over 1,500 civilians in the process of dismantling the illegal tunnels on their border. This was no accident, it was calculated murder on the part of the Israeli government.
The Egyptians flooded the tunnels with sewage on the Egyptian side. The tunnels, unlike the ones from Gaza into Israel are not used to kill civilians, nor is Hamas shooting missiles into Egypt.
You might be interested in the words of British Colonel Kemp, who was in charge of all British forces in Afghanistan:
"Kemp pointed out that, during the operation, there was approximately one civilian casualty for ever terrorist killed by the IDF, whereas the average in the world is four civilians for every combatant, and that, when taking into consideration Hamas’s use of human shields, this shows how careful the IDF is.
“No army in the world acts with as much discretion and great care as the IDF in order to minimize damage. The US and the UK are careful, but not as much as Israel,” he told the committee."
http://www.jpost.com/Arab-Israeli-Conflict/Former-British-co...
What you fail to mention is that Egypt eliminated over 1,300 illegal tunnels along their border without killing a single civilian. Israel on the other hand, murdered over 1,500 civilians in the process of dismantling the illegal tunnels on their border. This was no accident, it was calculated murder on the part of the Israeli government.