Men have been fighting underground for centuries. Before gunpowder was even invented, soldiers sneaked into castles through secret tunnels. Spies used them for getting in and out of fortified camps. The ancient Romans used tunnels, the Mongols used them, Ivan the Terrible used tunnels to dig under the walls of the city of Kazan and bring it down. So, the tunnels under Gaza are not a new military challenge. But they remain one of the world’s most difficult. It’s actually difficult to believe… that with all the modern technology and inventions that go into powering our 21st-century war machine… something as ancient and simple as a tunnel could still pose such a big challenge to the world’s most advanced armies. #gaza #tunnel #israelhamaswar #idf #netanyahu #israel #palestine #hamas n18oc_world n18oc_crux 0:00 INTRODUCTION 3:48 HOW OLD ARE GAZA’S TUNNELS? 4:45 HOW CAN ISRAEL GET INTO THE TUNNELS? 5:58 UNDERGROUND, IT’S ADVANTAGE HAMAS 7:00 SLOWER THAN SLOW PROGRESS 8:02 CAN ISRAEL FLUSH HAMAS OUT OF ITS TUNNELS? 8:36 CAN ISRAEL BLOCK THE TUNNELS? 9:12 WHY TRADITIONAL WEAPONS CAN’T BE WIELDED UNDERGROUND CRUX is your daily video news guide to the big events that are shaping our world. We track news, geopolitics, diplomacy and defence strategies and explain how they shape national policies. Crux makes sense of global developments, and analyses their impact on daily lives. Follow CRUX on Telegram: https://bit.ly/3fnlLua Follow CRUX on Instagram (@crux.india): https://bit.ly/3qSFx1K Follow CRUX on Facebook: https://bit.ly/2Lte7iF #GetCloserToTheNews with latest headlines on politics, sports and entertainment on news18.com https://bit.ly/2Y4QccL Also watch: Crux Decode: https://bit.ly/3MjzIoG Crux+ : https://bit.ly/35mm97B Crux Most Watched: https://bit.ly/3KhJ8iX