51.   As most settlers see it, they have a right to live in Gaza and the army has an obligation to protect them.

52.   As the manager of a complicated city and a declared aspirant for national leadership, Giuliani has an obligation to bring clarity and stability to a disorderly situation.

53.   As president, Clinton has an obligation to consider the national interest when he weighs legislation of this kind.

54.   As Little Ambassadors, the twins have an obligation to spread the word.

55.   As the youngest son, he has an obligation to try to find a different life, he said.

56.   At issue is whether local governments have an obligation to use their powers to save endangered species.

57.   At the moment, they have an obligation to put those differences aside and conduct themselves like allies for the sake of the regional economy.

58.   At the same time, it has obligations to Nevada, which would reap a fortune from what certainly will be the richest fight in the history of boxing.

59.   At traditional firms, brokers have an obligation to make sure an investment is appropriate before recommending it to a client.

60.   Because of our past and present support for Saudi Arabia, Americans have an obligation to demand extensive reforms there.