Trump left Biden a gift, and he only has to follow the instructions in order to cement his legacy. The question is - will he?

The Pentagon said Monday that it has not decided whether to withdraw U.S. troops from Afghanistan, as Washington considers a potential end to America’s longest war.

“Everybody here is mindful of looming deadlines,” Pentagon press secretary John Kirby told reporters during a press briefing. “And I cannot today sketch out for you what specific planning is going on when there hasn’t been a decision made yet about future force posture in Afghanistan,” he said.

In February 2020 the United States brokered a deal with the Taliban that would usher in a permanent cease-fire and reduced further the U.S. military’s footprint from approximately 13,000 troops to 8,600 by mid-July last year.

By May 2021, all foreign forces would leave the war-weary country, according to the deal. There are about 2,500 U.S. troops currently in the country.

First of all, the Pentagon shouldn't be making this decision. Matters of peace should be handled by the president and Congress.
Secondly, we have a deal in place. President Trump made the decision. Breaking a peace deal requires justification. Any justification can't be logistics, because we only have 2,500 troops there on a couple major bases.
Lastly, this is actually a good sign. Why? Because the Pentagon doesn't want peace, EVER. NATO has vocally denounced any peace deal with the Taliban. So if there is "indecision", that means they are having trouble getting Biden on-board with breaking the peace deal.
Biden already withdrew US support for the genocidal Saudi-led war on Yemen.
A few days ago Biden made an equally important decision.

President Joe Biden has suspended drone strikes outside of war zones where US forces are operating, reversing the policy of his predecessor Donald Trump, who had given the military free rein in countries such as Somalia.

Now there are some big caveats to this order. Such as the White House can still order drone strikes. The difference is that the Pentagon and CIA can't do drone strikes unilaterally anymore, except to help US troops on the ground.
Either way Biden is showing backbone against the Pentagon that Trump never showed, except at the very end of his administration, and Obama never showed at all.
My expectation for Biden couldn't have been lower, so if he manages to get us out of Afghanistan, then he'll exceeded all of my hopes.
Former Afghan President Karzai came out in support of the latest US peace proposal today.

Possibly just as important was a peace proposal today by Iran-backed Iraqi militias.

After frantic meetings in Baghdad, Beirut and Tehran, Iranian-backed Iraqi paramilitaries have agreed to stop attacks against US forces in Iraq on the condition that Iraqi Prime Minister Mustafa al-Kadhimi formally demands an American withdrawal, officials and faction commanders told Middle East Eye.

Kadhimi must tell Washington that the pullout has to be completed within 12 months, they added. Sources said it is likely that Kadhimi will comply and make the formal request.

On 1 March, the armed factions announced the end of an unofficial armistice with US forces in Iraq that had largely held since October, despite a few violations.

Like Afghanistan, we only have 2,500 troops in Iraq. So logistics are no obstacle to withdrawal.
Now it should be noted that the Iraqi government has already, formally and officially demanded last year that we withdraw our troops from Iraq. The Trump administration response to that perfectly reasonable demand was to say, “discussing how to best recommit to our strategic partnership - not to discuss troop withdrawal, but our right, appropriate force posture in the Middle East.”
Or in english - "FU".
Hopefully, Biden will agree to recognize Iraq's sovereignty.
Plus, if we pull our troops out of Iraq, then the position of our troops in our illegal occupation of eastern Syria becomes untenable.