NATO holds post-Trump talks as Afghanistan decision looms
Key on the agenda at the two-day virtual conference is the future of NATO's 9,600-strong support mission in Afghanistan after Trump sidelined allies and struck a deal with the Taliban to pull out troops.
Biden's administration is reviewing whether to stick to a looming May 1 deadline to withdraw or risk a bloody backlash from the insurgents by staying.
New US Defence Secretary Lloyd Austin is not set to make any firm announcement when the topic is discussed Thursday - but will seek input from allies to help Biden make his call.
Other NATO members insist they are willing to remain in Afghanistan, if Washington stays too.
"We can already say that we are not yet in a position to talk about the withdrawal of international forces from Afghanistan," German Defence Minister Annegret Kramp-Karrenbauer said as she arrived for the meeting.
Central to the mission's fate is the question of whether the US determines that the Taliban has broken promises in the peace deal by ratcheting up attacks and failing to make headway in talks with the Kabul government.
The insurgents have launched a string of offensives threatening at least two provincial capitals and warned NATO ministers not to seek a "continuation of occupation and war" by staying.
Kramp-Karrenbauer said peace negotiations between the Taliban and government "have not yet been concluded in such a way that the troops can now leave Afghanistan".
"This also means a changed security situation, an increased threat for the international forces, also for our own forces. We have to prepare for this, and we will certainly discuss this," she said.
NATO Secretary General Jens Stoltenberg insisted that allies would "make the decision when the time is right to leave together".
NATO countries are desperate not to see Afghanistan slide back into serving as a sanctuary for groups like Al-Qaeda, two decades after the alliance launched operations there in the wake of the September 11 attacks.
A study mandated by the US Congress has called for a delay in the pullout, warning it would effectively hand the Taliban a victory.
Trump cut US troop numbers during his final days in office to 2,500 - their lowest figure since the start of the war in 2001.
The US wants to use this week's meeting to draw a line under Trump's tenure - during which the former leader reportedly discussed pulling out of NATO - by stressing Washington's commitment to its partners.
"We must consult together, decide together and act together," Defence Secretary Austin tweeted.
A member of French Defence Minister Florence Parly's entourage said the first meeting with the new administration "went very well".
"It confirms the new tone and the new sense of harmony among the allies," the source said.
The alliance is looking to paper over any divisions, but a raft of challenges remain, including bolstering defence budgets and squabbles with NATO member Turkey.
The allies on Thursday are set to agree to extend and expand a training mission to bolster Iraq's military as it tries to stop the resurgence of the Islamic State group.
Wednesday's discussions covered ambitious proposals to reform the 70-year-old alliance being prepared ahead of a summit to include Biden later this year.
Stoltenberg is asking to increase the alliance's common funding for "deterrence and defence activities" as it faces off against an emboldened Russia on its eastern flank.
That proposal comes after allies have faced years of combustible debate over defence budgets.
Trump harangued leading nations like Germany for failing to pull their weight as he pressured them to boost defence spending to two percent of gross domestic product.
Despite the marked change in tone, the new US administration looks set to remain firm on pressing other members to do more to share NATO's financial and military burden.
"Burden-sharing writ large is not going away and it's going to remain a priority," a senior US official said.
Agencies contributed to this report.