ISLAMABAD - The United States has described rejection of the outcome of third trilateral UK-Afghanistan-Pakistan summit by Afghan Taliban as 'unfortunate'.

"This is very unfortunate," said Rian Harris US Embassy spokesperson in response to a query by this scribe on Thursday.
She said the United States welcomes the trilateral summit and fully endorses the content of the joint statement issued at the conclusion of the meeting.
"We are committed to an Afghan-led peace process and call on the Taliban to take steps necessary to open an office in Doha and enter into a dialogue with the High Peace Council," Rian Harris said, adding that the goal should be an inclusive political order in a strong, unified, sovereign Afghanistan.
She went on to say that as part of this process, the Taliban must end violence, break ties with Al-Qaeda and accept Afghanistan's constitution ensuring protection of women and children. 
An Afghan Taliban spokesman on Wednesday had dismissed the outcome of a conference in London participated by the leaders of Afghanistan, Pakistan and Britain. The leaders agreed to work together for a peace deal within six months. The conference and other ‘horse trading’ was "the real obstacles of effective and fruitful negotiations between the factual sides," Zabihullah Mujahid was quoted by various media outlets as saying.
The leaders of UK, Pakistan and Afghanistan also said they would support opening of an office in Qatar by Afghan Taliban to hold talks.
"President Karzai, President Zardari and the Prime Minister Cameron vowed that they will supported the opening of an office in Doha for the purpose of negotiations between the Taliban and the High Peace Council of Afghanistan as part of an Afghan-led peace process," a joint statement had said following the trilateral summit on Monday.