Afghan President Ashraf Ghani has questioned a key component of an agreement between the United States and the Taliban aimed at ending the 18-year war in Afghanistan.

Afghan President Ashraf Ghani said Sunday his government has made no commitment to release 5,000 Taliban prisoners as part of a landmark peace deal the United States signed with the Islamist insurgent group Saturday.

The U.S. military carried out what it called a “defensive strike” against Taliban fighters Wednesday in southern Afghanistan, hours after President Donald Trump spoke by phone with a top Taliban leader about a peace deal the two sides signed aimed at ending the nearly 19-year war in Afghanistan.

Prosecutors have been given the green light to investigate alleged war crimes and crimes against humanity in Afghanistan – and beyond its borders – linked to Afghan, Taliban and US troops, the International Criminal Court said on Thursday.

Afghan officials say at least six people have been killed in a Taliban attack in the northern Balkh Province, amid a weeklong “reduction of violence” agreed between the United States and the Taliban.

Taliban fighters and Afghan security forces clashed in parts of Afghanistan on Saturday, a day after a week-long “reduction in violence” was announced, but the incidents did not spark immediate alarm on either side.

The United States has ceased offensive military operations in Afghanistan against the Taliban in accordance with an agreement to reduce violence ahead of a possible peace deal, the top U.S. military commander here announced Saturday.

On 21 February, U.S. and Taliban representatives announced a deal paving the way for withdrawal of U.S. troops from Afghanistan and talks among Afghan parties to the conflict. In this Q&A, Crisis Group expert Andrew Watkins explains what the agreement entails and what comes next.

The Trump administration is hoping to reach a peace deal with the Taliban that would end America’s longest war and begin the withdrawal of troops from Afghanistan.

U.S. special envoy Zalmay Khalilzad and Afghan President Ashraf Ghani on Wednesday discussed a U.S. deal with Taliban militants on a weeklong reduction in violence, meeting the day after Ghani was declared a winner of a disputed presidential poll.