But Mr. Trump called it off, pointing to an uptick in violence across Afghanistan and the death of an American soldier, along with 11 other people, in a Taliban-directed suicide bombing in Kabul.
The resumption of any peace negotiations would be further complicated by the Afghan presidential elections in September that were mired by violence, low turnout and an unclear victor. Initial results, which were expected on Saturday, have been delayed at least a week.
With Washington’s strategy unclear, the United States-led mission in Afghanistan has continued its campaign to target and kill the Taliban at levels not seen since the height of the war.
But the increase in operations has not been without a cost. More than 1,000 civilians were killed in the past four months, the United Nations said. On Friday, a suicide bomber killed more than 70 people at a mosque in Nangarhar Province.
Mr. Esper, a futurist who is trying to focus the Pentagon on confronting China and Russia, is instead now dealing with the hasty retreat of American forces from northern Syria and a new deployment of 2,000 troops to Saudi Arabia in an effort to curb what the White House sees as a growing threat from Iran. Some of the troops may withdraw to Iraq, Jordan, Europe or the United States, officials said at the time.