A former care worker from Nottinghamshire who joined the fight against Islamic State in Syria has been arrested upon his return to the UK. Aiden Aslin, 23, was being questioned under the Terrorism Act, after being arrested on suspicion of engaging “in the preparation to fight against Daesh” and possessing “articles for terrorist purposes in Iraq/Syria”, Nottinghamshire police said, using the derogatory Arabic term for Isis.

Reports claim Vladimir Putin's armed forces have dropped the biggest ever non-nuclear bomb on ISIS leaders in Deir ez-Zor in Syria.

German authorities believe that Islamic State terrorists have stolen over 11,000 blank Syrian passports, confidential documents seen by the Bild am Sonntag newspaper reportedly reveal.

In an interview with a sports outlet on Thursday, Lebanese-American porn star-turned sports blogger Mia Khalifa announced that she has been receiving death threats from ISIS. Khalifa said that ISIS members have posted photos of her, bloodied and beheaded, on social media outlets. While she said the posts worry her, she doesn't want to "show weakness...that's exactly what they're looking for."

The Operation to Liberate Raqqa continues at full speed on day 79. SDF fighters advance in the city center and deliver heavy blows to the gangs. 7 ISIS members were killed in clashes last night in the Mansur neighborhood to the east of Raqqa. Fighters advanced in the Nahda neighborhood to the west of the city and cleared several important spots. 9 gang members were killed in clashes in the neighborhood.

ISIS released a propaganda video that features a boy who claims he is the American son of a U.S. soldier and moved to Syria with his mother two years ago. The child, who speaks in fluent English with what sounds like an American accent, is identified only as Yousef, age 10. NBC News has not verified his name, his nationality or his whereabouts.

Young men who leave their homes to fight for terrorist groups in Syria mainly come from disadvantaged backgrounds, have low levels of education and “lack any basic understanding of the true meaning of jihad or even the Islamic faith”, according to a new report. A study for the United Nations Office of Counter-Terrorism found that despite claiming to protect Muslims, most of the returned fighters were “novices” in their religion and some did not know how to pray properly.

Lebanon's U.S.-backed army on Saturday launched its biggest military operation yet against Islamic State militants who in 2014 gained a foothold along the tiny Mediterranean country's border with Syria. The long-awaited campaign aims to defeat IS in the group's border enclave and put an end to a terror threat that has loomed over Lebanon.

Isis has claimed responsibility for a stabbing attack in Russia that injured eight people, the group's Amaq news agency has said. A man was shot dead by police after knifing people apparently at random in the Siberian city of Surgut on Saturday morning. Russian authorities earlier declined to comment on whether the incident was being treated as a terrorist attack and were said to be keeping an open mind about the attacker's motive.

Police are hunting four men thought to be behind the two terror attacks which killed 14 people in Catalonia, amid fears the death toll could have been much higher had the group not been forced into action by an accidental explosion. Moussa Oukabir, Mohamed Hychami, Younes Abouyaaqoub and Said Aallaa have been named in Spanish press as suspected members of the 12-strong terror cell which plotted Europe's latest terrorist outrage.

Law enforcement officials tell CBS News there is intelligence that indicates the Barcelona attack that left 14 dead and more than 100 injured was more than just an ISIS-inspired attack. CBS News national security analyst and former homeland security adviser to President George W. Bush, Fran Townsend, said on "CBS This Morning" the attack looks like it was "much more directly controlled than merely inspired."

The operation to liberate Raqqa from ISIS, launched by YPG-led Syrian Democratic Forces (SDF) on June 6, continues at full force in its 73rd day.

An ISIS element has been burned to death by his first wife on the night of his marriage with another woman in Tal Afar, near the northern Iraqi city of Mosul. An informed Iraqi source in Nineveh Province has said the first wife of an ISIS terrorist has burned alive the husband, along with his newlywed second spouse, a few minutes after the end of their wedding ceremony in Tal Afar in west of the northern Iraqi province.

The UK may continue to face the threat of Islamist terrorism for another "20 to 30 years", the former head of MI5 has said. Lord Evans told BBC Radio 4's Today programme the issue was a "generational problem" and that the UK needed to "persevere" with efforts to defeat it. He also said devices connected to the internet needed to be made more secure in the face of emerging cyber threats.

The new video shows a distraught Wenzel with her arms secured by armed men being marched through Mosul amid a crowd of cheering Iraqis.

Attorney-General George Brandis has warned of Islamic State's desire to establish a "regional caliphate" and said the battle by pro-IS militants in the Philippines was of "great concern" ahead of a fast-tracked meeting of six countries. Indonesia and Australia will co-host a summit on Saturday with four neighbouring countries to respond to the mounting terror threat posed to South-east Asia by IS.

President Donald Trump spent his Saturday morning posting a series of tweets ranging from healthcare to the New York Times possibly foiling an attempt to kill a member of ISIS. The President said the newspaper has a "sick agenda" and referenced ISIS leader Abu Bakr al-Baghdadi, who has been suspected to be dead for months. "The Failing New York Times foiled U.S. attempt to kill the single most wanted terrorist, —Al-Baghdadi.Their sick agenda over National Security," Trump tweeted.

A 16-year-old German teenager, who had joined the Islamic State (ISIS) group and is now under detention in Iraq, has said that she regrets joining the terrorist organisation and that she just wants to go home to her family. Four German women, who had joined ISIS, are currently held under detention in a prison in Iraq. The women are also being provided consular assistance, Reuters reported citing Der Spiegel magazine.

Four German women, including a 16-year-old girl, who joined Islamic State in recent years are being held in an Iraqi prison and receiving consular assistance, Der Spiegel magazine reported on Saturday. It said diplomats had visited the four in a prison at the airport in Baghdad on Thursday, and they were doing well given the circumstances. They could face the death penalty in Iraq for belonging to the militant group, the magazine added.

Moscow on Monday said it was struggling to confirm if the leader of the Islamic State group Abu Bakr al-Baghdadi is dead or alive, a month after reporting his possible demise. The Russian army said in June that it was trying to verify information that its jets killed Baghdadi during a bombing raid near the IS stronghold of Raqa in Syria.