The Taliban warned Wednesday it was ready to fight back after Afghan forces were ordered to resume strikes in response to a series of deadly attacks, further unravelling a fragile peace process.

A brazen daylight assault on a maternity hospital in Kabul on Tuesday -- which killed at least 14 people including infants and nurses -- was followed by a blast at a funeral in the country's restive east, leaving 24 mourners dead.

President Ashraf Ghani blamed both attacks on the Taliban and Islamic State, ordering Afghan troops to "return to offensive postures, and resume their operations against the enemy".

But the Taliban, which denied involvement in Tuesday's attacks, warned it was "fully prepared" to counter any strikes by Afghan forces.

Injured mourners are taken to hospital after a suicide bomb attack on a funeral in eastern Afghanistan
Injured mourners are taken to hospital after a suicide bomb attack on a funeral in eastern Afghanistan AFP / NOORULLAH SHIRZADA

"From now onwards the responsibility of further escalation of violence and its ramifications shall fall squarely on the shoulders of the Kabul administration," it said in a statement early on Wednesday.

The aggressive posturing raises fresh questions about the fate of a hoped-for peace process that is teetering just as Afghanistan grapples with a public health crisis.

Ghani had earlier vowed to only react defensively to Taliban attacks to show good faith ahead of eventual peace talks, set out in a landmark deal between the insurgents and the US in February.

The Taliban have largely abstained from launching any major attacks in Kabul and other cities since the deal was signed.

Eyewitnesses describe the scene of a suicide bomb attack at a funeral in the country's restive east left two dozen mourners dead.
Eyewitnesses describe the scene of a suicide bomb attack at a funeral in the country's restive east left two dozen mourners dead. AFPTV / Noorullah SHIRZADA

It has, however, carried out regular attacks against Afghan forces in several provinces.

They have blamed the Islamic State and elements of the government's intelligence units for the latest attacks.

The Islamic State group said it was behind the funeral suicide bombing, but the hospital attack has not been claimed.

Top US officials, including Secretary of State Mike Pompeo who noted Taliban's denial of responsibility for Tuesday's attacks, have urged the Afghan government and the militant group to ensure that the peace process succeeds.

"The Taliban and the Afghan government should cooperate to bring the perpetrators to justice," Pompeo said in a statement.

"Failure to do so leaves Afghanistan vulnerable to terrorism, perpetual instability and economic hardship," Khalilzad said on Twitter.

The accord with Washington sees all US and foreign forces quit Afghanistan over the next year.

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