Washington (AFP) – By early December US intelligence was certain: the man occupying the top floor of a nondescript house in Atme, northern Syria — who never left the premises, emerging only to bathe on the roof — was the head of the Islamic State group. In the White House Situation Room, a table-top model of the house was set up, and President Joe Biden was briefed on his options to neutralize Abu Ibrahim al-Hashimi al-Qurashi, one of America’s most wanted jihadist targets. US officials say they could have easily killed Qurashi — whose location they had narrowed down last year before pinpoi…