Paragraph confusion

"We don't know whether there might have been some people inside of government, outside of government, and that's something we have to investigate, and more importantly, the Pakistani government has to investigate," he said. The president also told the programme he didn't lose sleep over the possibility that Bin Laden might be killed. Anyone who questions whether the terrorist mastermind didn't deserve his fate "needs to have their head examined," he said.somebody plz explain the meaning of underlined sentence