Islamic State group militants killed at least seven soldiers and militiamen in eastern Syria on Wednesday, the latest in a series of deadly attacks, a Britain-based war monitor said.

A British-born woman who went to Syria as a schoolgirl to join Islamic State should not be allowed to return to Britain to challenge the government taking away her citizenship because she poses a security risk, the UK's Supreme Court ruled on Friday.

A wave of air strikes by government ally Russia killed at least 21 Islamic State group militants in the Syrian desert over the past 24 hours, a monitor said Saturday.

Syria's Kurds have agreed to allow thousands of Syrians including relatives of IS militants to leave a squalid and over-populated camp they administer, a top official said Monday.

The death toll from a militant attack on the convoy of the regional governor in northeast Nigeria has risen to 30, security sources said Saturday.

Clashes in Syria between pro-regime forces and Islamic State group, along with air strikes, have killed at least 28 fighters in the northern province of Raqa, a war monitor said Tuesday.

A gunbattle between Islamic State fighters and Afghan security forces raged at a prison in the eastern city of Jalalabad on Monday, with at least 24 people killed after the militants' overnight assault led to a mass jailbreak.

Militant group Islamic State has claimed responsibility for an attack in northern Mozambique just south of the site of gas projects worth $60 billion being developed by the likes of Exxon Mobil and Total .

Dozens of people were killed when gunmen opened fire at a political rally in Kabul on Friday, in the deadliest assault in Afghanistan since the US signed a withdrawal deal with the Taliban.

Indonesia has said it will not bring home nearly 700 hundred nationals who joined the Islamic State group in the Middle East over security fears, but added it would still consider repatriating young children.

British Prime Minister Boris Johnson will set out tougher rules on releasing people convicted of terrorism offences after an Islamist attacker injured two people

Seven soldiers were killed on Tuesday when Islamic State-affiliated militants attacked a military position in northeastern Nigeria, two military sources told AFP.