It seemed to require a reaction.

That is a reasonable but narrow point at a time requiring a broad and calming mayoral reaction.

But touching a sacred cow requires a knee-jerk reaction by some.

He hadn't yet done anything to the book dealer that would have required such a reaction.

Cheetah plays extremely close to the channel and requires a smooth reaction off the break point.

This requires a specific reaction in kind.

It requires a rapid and sharp reaction, including from Europe.

Development of the services and Internet market and changes in consumer attitudes require a reaction on the part of the European Union.

Trafficking in human beings is a disgrace to our society and requires a strong, concerted reaction from everyone.

Opportunities and dangers for interests of the analyst's country, especially unexpected developments that may require a reaction.