During bad circumstances, which is the human inheritance, you must decide not to be reduced. You have your humanity, and you must not allow anything to reduce that. We are obliged to know we are global citizens. Disasters remind us we are world citizens, whether we like it or not.
If we are willing to act violently in pursuit of a peripheral interest, everyone can be certain that, when a vital interest is at stake, we will be still more violent. 'Credibility' is defined as the willingness to kill a lot of people now for a not very good cause to assure the world that we'll kill a lot more people if we can find a better one.