But it is wrong to say that Americans have an "idea" to create an Afghan Conservation Corps (ACC) or that it would be useless in Pushtun areas because of security concerns.
In Pakistan, 15 health workers in the anti-polio campaign have been killed since July, and a World Health Organization official estimated that 240,000 children have missed vaccinations in the tribal areas because of security concerns.
In the 2010 election, the government banned voting in some ethnic-minority areas, ostensibly because of security concerns.
Mikulak rejected Syria's explanation that the delay is the result of security concerns in the areas through which chemical stores would be transported.
In March, the World Health Organization reported that approximately 240,000 children in tribal areas have missed their polio vaccinations because of security concerns.
Conflict areas are generally difficult to reach because of security concerns.
Increasing risk for resurgence, potential severity of an epidemic, and possibility of preventing its spread by vaccination make early detection of yellow fever outbreaks essential, especially in a country such as the Central African Republic, where access to healthcare is difficult because of security concerns in several areas.
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The eyewitness, who spoke to the BBC Hausa Service on condition of anonymity because of security concerns, said the area was littered with bodies after the fighting.
Any attempts to postpone general elections because of security concerns, especially in the Sunni areas, have also been fiercely resisted.
