ISLAMABAD (Reuters) - The United States was not sincere about peace in Afghanistan when it signalled it would remain open to exploring a settlement that includes the Haqqani network, one of the groups senior commanders said on Thursday. US Secretary of State Hillary Clinton had suggested in comments this week that Washington would not shut the door to the Haqqanis. The Haqqanis saw the remarks as an attempt to divide Afghan insurgent groups and believed only the top leaders of the Taliban should negotiate, said the commander. We had rejected many such offers from the United States in the past and reject this new offer as we are not authorised to decide the future of Afghanistan, he told Reuters. Inclusion of the Haqqani network in a hoped-for peace deal now a chief objective in the Obama administrations Afghanistan policy after a decade of war is a controversial idea in Washington.