A 17-year-old boy whose two elder brothers were killed waging jihad in Syria has developed an interest in First World War poetry, a High Court judge has said.

Mr Justice Hayden said the teenager had "engaged" with works by poets who were disaffected with the First World War and had written a school essay on the subject.

The judge last year barred the teenager from travelling abroad - following a hearing in the Family Division of the High Court - after police and social workers raised concerns about him heading to Syria.

He made the teenager a ward of court - a move which bars him from leaving the jurisdiction of England and Wales.

Mr Justice Hayden said the teenager, who has joint Libyan and British nationality, could not be named.

But he said the local authority which had applied for the teenager to be made a ward of court was Brighton and Hove City Council.

The judge revealed the teenager's interest in First World War poets when reviewing the case at a follow-up hearing in the Family Division of the High Court in London on Tuesday.

A lawyer representing Brighton council outlined the positive and negative aspects of the teenager's progress.

"One issue he did engage in at school was the First World War poets," said Mr Justice Hayden.

"He wrote an essay."

The judge added: "The key feature of World War I poetry is its disaffection with war."

Mr Justice Hayden had made the teenager a ward of court in March 2015 - when he was 16.

He had been told last year how council staff had learned that family members were making plans for the teenager to go on a trip to Dubai during the Easter 2015 holiday.

The judge had said he was concerned to ''keep this lad alive'' and said an order which barred from travelling abroad was proportionate.

''(The teenager) is a vulnerable young person,'' Mr Justice Hayden had said. ''He has grown up in modern Britain in an extraordinary family - a family where the male members are patently committed to waging jihad in war-torn Syria.''

He said he had balanced the teenager's human rights and added: ''The balance falls clearly in protecting this young man, ultimately from himself.''

Barrister Martin Downs, who represents Brighton council, had told how the teenager's family had an ''extraordinary history''.

He had told how the teenager had an uncle who had been held in a United States detention camp in Guantanamo Bay, Cuba.

Three of his brothers had gone to fight for the al-Nusra Front - a group with links to al-Qaeda.

Two died when both were in their teens and a third was wounded.

A friend of the teenager had also been killed in fighting.

Mr Justice Hayden is expected to review the case again in the next few months.