The suicide bombing on Saturday was the second such incident in Kabul in 24 hours, and the seventh major assault in Afghanistan since Tuesday.

In an email to journalists, the Taliban said it was responsible for the ambush on the army cadets. The group has been involved in four other attacks on police and military bases this week

Dawlat Waziri, defence ministry spokesman, said the suicide bomber targeted a minibus carrying the trainees right in front of a military academy in the Charrahi Qambar area of Kabul.

NATO's Resolute Support mission tweeted that the latest incident was an "attack on the future" of Afghanistan and its security forces.

Earlier on Saturday, two rockets landed near the international military headquarters in Kabul, in an attack claimed by the Taliban.

The spate of deadly attacks underscores deteriorating security across Afghanistan as the resurgent Taliban step up their attacks on security installations with devastating effect and the Islamic State of Iraq and the Levant (ISIL, also known as ISIS) armed group continue to targ

The Afghan security forces are facing a resurgent Taliban, and ISIL is also weighing in," Al Jazeera's Jennifer Glasse, reporting from Kabul, said.

"It's a big challenge for the Afghan security forces as they try and grapple back territory from the Taliban who control or contest almost 40 percent of the country," she added.

"It's a very difficult task for these forces who are taking punishing casualties in the continuing fight."

Habib Wardak, a security analyst, told Al Jazeera that both the Taliban and ISIL "are trying to portray that they have the ability to inflict damage not just to the Afghan security forces and the Aghan government, but also to its international counterparts

A suicide bomber blew himself up in a Shia mosque in Kabul, killing 56 people and wounding 55 others in an assault claimed by ISIL.

The Imam Zaman Mosque in the city's Dashti Barch area was half full, with about 300-400 worshippers attending Friday prayers.

Trump threatens to cut aid over Jerusalem vote at UN

US President Donald Trump has threatened to cut aid to countries that vote in favour of a draft UN resolution condemning the US decision to recognise Jerusalem as the capital of Israel.

Trump said at the White House on Wednesday the US would be "watching those votes" in the General Assembly.

"They take hundreds of millions of dollars and even billions of dollars, and then they vote against us. Well, we're watching those votes. Let them vote against us. We'll save a lot. We don't care," Reuters news agency quoted Trump as saying.

The UN General Assembly will hold an emergency session on Thursday to vote on the controversial US decision.

Trump's comments came after Nikki Haley, US ambassador to the UN, sent threatening letters to UN member states, urging them to vote against the motion.

Haley also said on Twitter "the US will be taking names" of countries that vote in favour of the resolution.

Riyad al-Malki, Palestinian foreign minister, on Wednesday accused the US of "threatening" member countries of the UN General Assembly in advance of the vote.