The imperative for preserving it has risen accordingly.
The imperative for aggression collides with the need to show respect for a personally popular incumbent.
The imperative for the uprising, he said, was even greater than when the villages rose against colonial powers.
The imperative for the player was to find a place where he would be judged on merit.
The imperative for all of us who care about politics is not merely to have sound ideas, but to convey them soundly.
The imperative for change that has swept the Arab world has given birth to great hope but also inflamed divisions old and new.
The imperative for America is to transform that "data", tackle problems shamefully ignored after the civil rights movement and try finally to end a centuries-old racial divide.
The imperative for the Tories is to establish that Mr Clegg is a pro-immigration sycophantic Europhile with no policy whatsoever, beyond defence cuts, to reduce the crippling burden of the national debt.
The imperative for India is clear: they are far behind in keeping up with the needs of a growing and more prosperous population.
The imperative for thorough, transparent, and accurate reporting is often in conflict with the need young scientists have to add items to their CVs.
The imperative for young people to mature into active and healthy adults and exit 'the revolving door of prison' makes their health experiences an important concern.
