Israeli Prime Minister Benjamin Netanyahu has refused to accept calls for a cease-fire in the ongoing conflict between Israel and Hamas, despite mounting pressure from the United States and other countries. Israeli ground forces have pushed into the densely populated Palestinian territory, causing immense destruction and loss of life, with the UN estimating 230 Palestinians killed, including 65 children, and 12 Israeli deaths, including two children. Hamas militants have prepared for years to fight street by street using a vast network of tunnels.