US special peace envoy Zalmay Khalilzad warned that distressingly high levels of violence could derail the peace process and the understanding that there is no military solution to the war in Afghanistan.

In a series of tweets overnight Monday, Khalilzad appeared to have been responding to Sunday�s spat between the Taliban and the US Forces Afghanistan after the insurgent group accused the US of violating the Doha agreement by carrying out airstrikes in Helmand and Farah provinces last week.

The US Forces Afghanistan responded not long after rejecting the claim and said they were within the terms of the agreement as they had been defending the Afghan security forces who had come under attack by the Taliban.

The Taliban also issued a veiled threat in their statement and said: All responsibility and consequences from the continuation of such actions shall fall squarely on the shoulders of the American side.

Khalilzad meanwhile said in his Twitter statement: Unfounded charges of violations and inflammatory rhetoric do not advance peace. Instead, we should pursue strict adherence to all articles of the US-Taliban Agreement and US-Afghanistan Joint Declaration and not neglect the commitment to gradually reduce violence.

Continued high levels of violence can threaten the peace process and the agreement and the core understanding that there is no military solution. Violence today remains distressingly high in spite of the recent reaffirmation of the need for substantial reduction.

Taliban attacks in Helmand, including on the provincial capital; Taliban attacks against Afghan security forces; & Taliban complaints of ANSF operations and coalition strikes led to a recent meeting in Doha.

All sides agreed to decrease attacks and strikes and reduce violence and casualties. Although violence in Helmand has decreased, violence overall in the country remains high.

Our expectation has been and remains that violence comes down and stays down.

It was a focus of the Agreement we signed, further highlighted in connection with the releases of the last batch of prisoners and reaffirmed again in the most recent commitment all sides made to adhere to all aspects of the deal, Khalilzad said.

Reacting to the car bombing on Sunday in Ghor province that killed at least 13 people, Khalilzad stated: Violence has stalked Afghans for far too long. It has robbed far too many Afghans of their loved ones. The tragedy in Ghor today is the most recent example.

He said: The belief that says violence must escalate to win concessions at the negotiating table is very risky. Such an approach can undermine the peace process and repeats past miscalculations by Afghan leaders.

We must adhere to the letter and spirit of what was negotiated and the recent understanding. They provide a path to minimizing Afghan loss of life and protecting an historic opportunity for peace which must not be missed, Khalilzad said.