With regard to minimizing the impact of groundings caused by engine problems, the existence of two competing engines could help in some situations and hurt in others.

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He identified three critical problems in Afghanistan: the lack of legitimacy for the government, the existence of safe havens for terrorists across the border in Pakistan, and the lack of military resources.

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In her closing remarks, Ms Bokova emphasized the existence of problems that limit access to education for large sections of society.

UNESCO: Communication and Information