(WASHINGTON) — Less than a day after President Joe Biden announced his decision to withdraw all U.S. forces from Afghanistan, Secretary of State Antony Blinken made his first visit to the country as he pushes to reignite diplomatic efforts for a deal between the Taliban and the Afghan government.

Arriving in Kabul Thursday, Blinken is meeting President Ashraf Ghani and other senior officials amid fears the government faces an imminent offensive by the militant group that has sought to establish an Islamic emirate in Afghanistan.

Ghani and Biden spoke Wednesday just before Biden’s speech, where he told the U.S. public, “It is time to end America’s longest war.”

But while 2,500 U.S. troops and 7,000 NATO forces will depart before Sept. 11, the war in Afghanistan will not end. The Taliban and an Afghan national delegation have been engaged in negotiations since last September, but remain at a deadlock.

Blinken tried to inject some urgency in that process last month by submitting an eight-page proposal to both sides, calling for an interim, power-sharing government, future elections, protection for women’s and minorities’ rights, and an Islamic council to review Afghan laws.

The proposal was meant to urge both sides to bring ideas to the table for a peace conference in Turkey — originally scheduled for April 16, then delayed until April 24 and now uncertain after the Taliban said Tuesday it would not participate until all U.S. and NATO forces exit.

Those forces will begin departing shortly, but will miss a May 1 deadline laid out in a deal former President Donald Trump’s administration signed with the militant group. It stipulated a full U.S. withdrawal, provided the Taliban met their commitments to engage in meaningful negotiations with the Afghan government, including on a permanent ceasefire and prevented terror groups from using Afghan soil to launch attacks — steps that U.S. officials have admitted the Taliban has not met.

Blinken’s proposal infuriated Afghan officials, who have long expressed frustration with the U.S. peace efforts — starting with the Trump administration’s decision to move ahead with U.S.-Taliban talks that excluded the government.

Ghani has rejected Blinken’s proposed power-sharing government, saying he is the democratically elected leader of Afghanistan, not the Taliban. But that may change now that U.S. troops, who have provided training and assistance to Afghan security forces, are exiting, leaving Ghani’s government to the Taliban.

Many analysts say that once U.S. forces leave, the Taliban will move to retake power by force, potentially sparking an all-out civil war.

Blinken admitted that was a “realistic” possibility Wednesday, but argued it is in “no one’s interests, including the Taliban, to plunge Afghanistan back into a long war.”

“Ultimately. the people of Afghanistan will be the ones to decide their future. We will do whatever we can to support efforts for a peaceful, stable, just future, but they’re the ones who have to decide it,” he added.

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