From his first days in office, Ban emphasized that many or most of the world’s greatest challenges come down to a simple yet stark reality: we are now a crowded, interconnected, global society, with seven billion people struggling to find a foothold on a highly vulnerable planet. The challenges of feeding the world, keeping it safe from epidemic diseases such as malaria and AIDS, and combining economic progress with local and global environmental safety are the defining challenges of our time. War and violence often have as underlying causes hunger, poverty, and environmental degradation, such as human-induced climate change.