BEIRUT, Lebanon, Sept. 11 (UPI) -- Israel's failed attempt to kill Hamas ' political leadership in unprecedented air strikes on the Qatari capital, Doha, will further complicate the Gaza negotiations and harden the Palestinian militant group's position, Hamas and analysts said. The action also could put the Abraham Accords at risk and undermine Gulf countries' trust in the United States as a reliable ally and security guarantor, they said. The attack, whether carried out with or without