The US has killed the leader of al-Qaeda, Ayman al-Zawahiri, in a drone strike in Afghanistan, President Joe Biden has confirmed.

He was killed in a counter-terrorism operation carried out by the CIA in the Afghan capital Kabul on Sunday. He and Osama Bin Laden plotted the 9/11 attacks together, and he was one of America's most wanted terrorists. Mr Biden said al-Zawahiri had "carved a trail of murder and violence against American citizens".

"From hiding, he co-ordinated al-Qaeda's branches and all around the world, including setting priorities for providing operational guidance and calling for and inspired attacks against US targets," the president said in a live television address from the White House. "Now justice has been delivered and this terrorist leader is no more," he added.

The FBI updated its Most Wanted Terrorist poster on Monday with Zawahiri's status: "Deceased." The 71-year-old Egyptian doctor took over al-Qaeda after the death of Bin Laden in 2011. Mr Biden said he had given the final approval for the "precision strike" after months of planning.

So-called Islamic State, the Taliban, and al-Qaeda are all radical jihadist groups, but they are not all the same.

The so-called Islamic State, al-Qaeda and now the Taliban are radical jihadist groups focused on ridding the world from the threat, as they perceive it, that Western culture poses to Islam.

However, although broadly speaking they share a similar ideology, their views actually differ significantly – so much so that the three groups have often found themselves in conflict with one another.  

And although there's no disputing the fact that IS have dominated the media in recent months, both al-Qaeda and the Taliban are still very much at large.

But what are the differences between these three prominent terrorist organisations? 

At least 47 people, including 30 civilians and 14 soldiers, killed by rebels in Arbinda town, according to state media.

Rebel fighters have killed dozens of people in northern Burkina Faso, as violence spirals anew in West Africa’s Sahel region.

In an attack near the northern town of Arbinda on Wednesday, rebels killed at least 47 people, including 30 civilians, 14 soldiers and three pro-government militiamen, state media reported.

State media reported that government troops killed 16 rebels while a security source put the number at 58.

Fighters linked to al-Qaeda and ISIL regularly carry out attacks in Burkina Faso and neighbouring Mali and Niger, killing hundreds of civilians this year alone.

Violence in the Sahel, a semi-arid band beneath the Sahara Desert, has continued to intensify despite the presence of thousands of UN, regional and Western troops and efforts by some governments to negotiate with rebel groups.

Assailants on motorbikes killed 37 people, including 14 children, in Tillaberi region, according to interior ministry.

More than 30 people were killed in a rebel attack in the West African country of Niger, the Ministry of Interior has said.

Armed assailants on motorcycles attacked the village of Darey Dey in the Tillaberi region close to the border with Mali on Monday and killed 37 people, including 14 children, according to the ministry.

The assailants attacked as people were working in the fields, a local official told the AFP news agency.

It was not immediately clear who was behind the attack but several armed groups linked to al-Qaeda or ISIL (ISIS) are active in the region.

Rated the world’s poorest country by the UN’s Human Development Index, Niger lies in the heart of the arid Sahel region of West Africa, which is battling a nine-year-old rebellion.

The bloodshed began in northern Mali in 2012 and then spread to the centre of the country before hitting neighbouring Niger and Burkina Faso.

Tillaberi has borne the brunt of the crisis.