Pakistan's Foreign Ministry spokesman said the U.S. ambassador to Pakistan was summoned to provide an explanation of the incident.

CNN: Source: U.S. troops launch helicopter assault in Pakistan

The study, which is half-completed, aims to produce clear figures on the number of Caesarian sections being carried out on the NHS and to provide an explanation for the increase.

BBC: Big rise in Caesarean births

Asking for an explanation or clarification forces the confronter to reflect on what he means and provide you with more relevant information.

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