Justice for me requires action, however imperfect and partial. Justice demands that we accomplish real goals for real people. Such on-the-ground actions rarely get noticed, often get waylaid, and are almost never completely successful.
Morals arise from our values. They are personal, having to do with the people and environment in which we were raised and the experiences that shaped our growing up. As adults, our morals are still shifting and changing.
The emanation of peace by any one person is a boon to us all. When that person is the leader of the most powerful and sometimes the most dangerous nation in the world, that boon is magnified exponentially.