The prospect has increased concern that Pyongyang is trying to hide evidence of a nuclear-weapons program.

The incidents have increased national concern over Spain's lack of modern safety precautions.

High profile security breaches have increased public concern about the handling of personal information.

But the cascade of challenges has vastly increased concern.

In addition, they said the cut in the rate, the largest since 1981, would increase concern over the economy.

The women in these popular protests are considered to have played a central role in increasing national concern with the history of women's political activism.

Such moves are likely to increase concern in Washington about the missile program.

The 1973 oil crisis increased public concern about this problem.

But this latest study will increase concern among those who claim the drug can also have a number of damaging side effects.

"It's going to increase concern here in the United States."