Despite US support, the Afghan government's surprising new peace offer to the Taliban is immediately running into a wall.
The insurgents show no sign of shifting from their demand that talks for a conflict-ending compromise take place with Washington, not Kabul.
The impasse is blocking a diplomatic path out of America's longest-running war and could prove as fateful as fortunes on the battlefield.
The Trump administration says it's escalating pressure on the Taliban to advance a negotiated solution to the fighting. But diplomacy is a distant second to military efforts right now, and the US isn't offering carrots of its own to persuade the insurgents to lay down their arms.
Laurel Miller, who until last June was a senior American diplomat for Afghanistan and Pakistan, said the US should be clearer about what it's willing to negotiate on, including when it might start pulling forces from Afghanistan. "That could set the stage for talks," she said.
Such a timetable seems a remote prospect, and President Donald Trump has consistently railed against the idea of telling the enemy when the US might leave.
The US involvement in the Afghan conflict is now in its 17th year, and 10,000 Afghan civilians were killed or wounded in 2017 alone. All sides are hung up on even the format for potential negotiations.
The Obama administration's peace push, which relied heavily on Afghanistan's neighbor Pakistan, floundered in 2015.
Afghan President Ashraf Ghani's new effort, announced at an international conference in Kabul this past week, includes incentives for insurgents that join negotiations and enter the political mainstream.
The government would provide passports and visas to Taliban members and their families, and work to remove sanctions against Taliban leaders, he said. The Islamist group could set up an office.
Alice Wells, America's top diplomat for South Asia, endorsed the overture and said the "onus" was on the Taliban to demonstrate they're ready to talk, "not to me or the United States, but to the sovereign and legitimate government and people of Afghanistan."
With wounds and emotions still raw in Kabul after a wave of brutal Taliban attacks in Kabul in late January, Ghani's offer was a significant olive branch. Still, it's one unlikely to change the calculus of hard-line insurgents, said Michael Kugelman, senior associate for South Asia at the Wilson Center think tank.
And Barnett Rubin, a New York University expert on Afghanistan who advised the Obama administration, said: "The trouble is that the major issue the Taliban is interested in talking about is the one he has no control over the presence of American troops in Afghanistan."
Top Afghan security officials maintain back-channel discussions with Taliban, The Associated Press has learned, but the officials' efforts are not coordinated and more formal talks are impeded by the Taliban's insistence that its "Islamic Emirate," ousted in a US-led invasion in 2001 for hosting al-Qaida, remains Afghanistan's legitimate government.
"America must end her occupation and must accept all our legitimate rights including the right to form a government consistent with the beliefs of our people," the militant group said in a rambling February 14 letter addressed to the American people and "peace-loving congressmen." It sought "peaceful dialogue" with Washington.
Events on the ground are moving in the opposite direction.
Since August, when Trump recommitted America to an indefinite military presence in the country, the U.S. Has sent in thousands of additional forces to train Afghans, bringing the total US troop figure to more than 14,000.
The US has intensified airstrikes, though there has been no significant dent on the Taliban, which control or contest nearly half the country.
Shortly after a Taliban suicide bomb using an ambulance that killed more than 100 people in Kabul, Trump declared on January 29: "We don't want to talk with the Taliban. There may be a time, but it's going to be a long time."
US officials have conveyed messages to Taliban political representatives in Qatar, urging the group to join talks with the Afghan government. Neighboring countries are doubtful about America's commitment to a political resolution.
Pakistan, Iran and Russia are thought to maintain ties to militant proxies inside Afghanistan in case the war-ravaged country collapses.
Miller, now a senior foreign policy expert at Rand Corp., said peace would require heavy lifting by the Trump administration, which has yet to appoint a top diplomat for the region.
The war might need international mediation. "It's not enough to say the door is open, let's have a peace process," she said. "You have to make it happen."