NATO Secretary-General Jens Stoltenberg said that the alliance's withdrawal from Afghanistan is conditional on the Taliban fulfilling their obligations and implementing the terms of the Doha Agreement, while Washington has confirmed that it is conducting a review of the agreement with the Taliban.

On Monday, Stoltenberg said Taliban fighters in Afghanistan must do more to fulfill the terms of a 2020 peace deal with the United States, which would allow any possible withdrawal of foreign forces by next May.

He stressed that there is a need to re-evaluate NATO's defense plans, and prepare for the future to build appropriate plans for more peace and prosperity, noting that political coordination between allies is important in the NATO 2030 plan as a platform for coordination and cooperation.

NATO's defense ministers will discuss later this week whether the Taliban is making progress on the peace deal, which called on militants to limit their attacks and foreign forces to withdraw by May 1.

On the level of relations with Washington, Stoltenberg stressed that there is a historic opportunity to open a new chapter in relations between the alliance and the United States.

And NATO has 9,600 troops on the ground in Afghanistan, including 2,500 American soldiers, who are working to train and provide support for Afghan forces.

Taliban Message Review

An American, a spokesman for the US State Department told Al-Jazeera that Washington had seen the Taliban's open letter, in which it called on Washington to abide by the Doha Agreement, and that what was negotiated was being reviewed.

He added that the reviews include the Taliban agreement with Washington, and an assessment of the movement's compliance with its obligations.

Meanwhile, German Defense Minister Annegret Kramp-Karenbauer said today that the Afghan peace talks have not made progress that would allow the withdrawal of foreign forces from Afghanistan for the time being.

She added that we must prepare for the deteriorating security situation for the foreign forces present in this country.

In the context, Reuters quoted the commander of US forces in Afghanistan, General Scott Miller, that what he described as the violence of the Taliban movement exceeded previously recorded levels.

Miller said that this level of violence does not create the conditions for moving towards the desired historic turning point in Afghanistan.

For its part, New Zealand announced today that it will end its military presence in Afghanistan in May.

New Zealand Prime Minister Jacinda Ardern said that the ongoing peace process in Doha is the best opportunity to reach a lasting political solution to the Afghan conflict.

She explained that the decision to end the military presence of her country's forces in Afghanistan was taken in consultation with key partners.