This appears to be a headline from a news story. The UN (United Nations) warns that the ongoing conflict between Israel and Gaza could have severe long-term effects. According to their estimations, the infrastructural, economic, and social damage caused by the war could set back progress in Gaza by nearly seven decades. This suggests a severe humanitarian crisis, with significant rebuilding and recovery needed in the aftermath. It’s important to note that all conflict situations warrant a balanced discussion respecting the geopolitical intricacies and human rights issues involved.