That relentlessness could be indispensable in the months ahead, because Mr. Cook may be tested as never before.
Medications rarely work to curb the symptoms of autism, but they can be indispensable in treating mental illness like obsessive-compulsive disorder, schizophrenia and bipolar disorder.
Blaming Islamic theology, or fixating on the repellent rhetoric of Isis, may be indispensable in achieving moral self-entrancement, and toughening up convictions of superiority: we, liberal, democratic and rational, are not at all like these savages.
It is, however, a quality that will be indispensable in victory if we are to help rebuild Iraq after decades of tyrannical rule and to repair our own frayed relations with governments, peoples, and institutions around the world.
In short, the United Nations can be an institution that is disconnected from what matters in the lives of our citizens, or it can be indispensable in advancing the interests of the people we serve.
At the time, Mr. Loeb demanded a shake-up of the board, stating that "we have distilled an all-star team of potential director candidates, who would be indispensable in working with the reconstituted board".
