The resignation of Rahmatullah Nabil comes as Afghanistan grapples with string of major Taliban attacks, including a 27-hour siege of Kandahar airport this week which killed at least 50 people.
Eleven Taliban suicide attackers on Tuesday breached the high-security Kandahar air field, which also houses a joint NATO-Afghan base, taking families hostage and triggering pitched firefights with soldiers.

In his resignation letter, Nabil citied 'a lack of
agreement on policy matters' and restrictions imposed by the president which he alleged had hindered his ability to do his job.
The development comes a day after Nabil posted a scathing Facebook post criticising Ghani's high-profile visit to Pakistan, the Taliban's historic backer, on Wednesday, for a regional conference.


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