Good evening and welcome to ABC World News Tonight. Here I am David Muir, bringing you the most up-to-date headlines from around the globe.Tonight's top story: A major breakthrough in the search for a cure for a https://junaidvkgn085919.mpeblog.com/56302339/breaking-news-top-headlines-december-2024-on-abc-world-news-tonight-with-david-muir