How many more will Jihadi John be 許すd to kill before we get him? 最新の beheading ビデオ comes after days of （人命などを）奪う，主張するs special 軍隊s are 'の近くにing in'

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The British テロリスト dubbed ‘Jihadi John’ has been 述べるd as a 'dead man walking' by commentators as the UK's 安全 services 捜し出す to 跡をつける him 負かす／撃墜する and bring him to 司法（官）.

But while some 専門家s have 示唆するd he has been identified by MI5 and MI6, his sickening 外見 in this ISIS ビデオ is a 思い出の品 of how much work British スパイ／執行官s must do before they bring his 統治する of terror to an end.

The best hope for 除去するing him may come from the skies. Last week it was 明らかにする／漏らすd the US has begun sorties using drones equipped with the 最新の cameras and 武器s over Raqqa in northern Syria ? where it is believed ISIS is 持つ／拘留するing Western 人質s.

Scroll 負かす／撃墜する for ビデオ?

Search: The 追跡（する） for 'Jihadi John' was 誘発するd by the 解放（する） of the first beheading ビデオ in which US 新聞記者／雑誌記者 James Foley was killed by a man with a London accent

It is hoped （映画の）フィート数 taken by US drones in northern Syria may help in 跡をつけるing him 負かす／撃墜する and targe ting him

It has also been 報告（する）／憶測d that 大統領 Obama would 認可する an 即座の strike on Jihadi John if drone 操作者s 報告（する）／憶測d they had 設立する him.

知能 専門家s are 確かな to forensically 診察する the 最新の ビデオ for new 手がかり（を与える）s as to his どの辺に.

On first 見解（をとる）ing, the 輪郭（を描く） of the 砂漠 background behind David Haines looks 類似の to the scene behind Steven Sotloff, the US 援助（する） 労働者 whose beheading was also broadcast online by IS.

The ビデオ only shows the 荒涼とした ground すぐに behind them.?

This would 示唆する that IS has learned from the ビデオ of the beheading of US 新聞記者／雑誌記者 James Foley, where a green plain in the distance was enough to 許す computer 専門家s to pinpoint the exact 場所 in the hillsides of Raqqa.?

British and US 安全 軍隊s are said to have been 熟考する／考慮するing the 闘士，戦闘機's movement, speech and the 武器 he used in a 企て，努力，提案 to work out who he is

専門家s have also called attention to the high level of 生産／産物 in ISIS ビデオs, which use 多重の cameras and professional microphones.?

These are in contrast to the grainy, low-鮮明度／定義 ビデオs of other terror groups.

It is understood that hundreds of British Special 軍隊s and 知能-集会 職員／兵員 are 現在／一般に working in the 地域 in an 成果／努力 to 逮捕（する） Jihadi John.

The 操作／手術 also 伴う／関わるs 連絡事務 with Kurdish and Iraqi 兵士s. They are using an array of sophisticated 器具／備品 to 跡をつける him 負かす／撃墜する and 解放する／自由な other 人質s.?

Jihadi John is believed to have travelled to the war-torn country from London over a year ago after becoming radicalised and raising money for the jihadists whilst in Britain.

US 当局 believed they had worked out the 闘士，戦闘機's position の直前に the first ビデオ - showing US 新聞記者／雑誌記者 James Foley's 死刑執行 - was 解放（する）d on September 2.

However, the 交戦的なs had moved on from the （軍の）野営地，陣営 の直前に American 特殊部隊員s arrived at the scene.

安全 軍隊s drew up a shortlist of possible 極端論者s who could be the 殺害者 after Mr Foley was killed.

専門家s then used high-tech 分析 of the man in the ビデオ's 団体／死体 and 発言する／表明する to try and 狭くする 負かす／撃墜する the 可能性のある 嫌疑者，容疑者／疑うs.

Britain's 外交官／大使 to the U.S. Peter Westmacott has told CNN that 安全 services in Britain and the US are pumping 抱擁する 資源s into finding out who he is and where he is hiding.

He said: 'We're putting a lot into it. And there are some very sophisticated 科学（工学）技術s, 発言する／表明する 身元確認，身分証明 and so on, which people can use to check who these people are.'

The masked man, who speaks with a （疑いを）晴らす London accent, has appeared in two 冷気／寒がらせるing ビデオs showing him beheading American 新聞記者／雑誌記者s and 問題／発行するing 脅しs to 大統領 Obama.

The ビデオs have been filmed in barren 砂漠, but 専門家s have gleamed some 手がかり（を与える）s to the group's 場所

The same 殺し屋 is thought to have appeared in the first two films - in which James Foley and Steven Sotloff (pictured) were killed, and 当局 will now analyse the 最新の ビデオ in a 企て，努力，提案 to find その上の 手がかり（を与える）s

He was at first 嫌疑者，容疑者／疑うd to be Abdel-Majed Abdel Bary, the いわゆる 'hip hop jihadist' who left his £1million home in Maida Vale to join Islamist militan ts fighting for the ISIS in Syria.

However, earlier this month, 公式の／役人s appeared to 支配する out Abdel Bary as the 殺し屋 and 焦点（を合わせる）d their attention on another man, whose 指名する has not yet been 解放（する）d.?

They are 報道によれば 確信して they have worked out the 闘士，戦闘機's 身元 using high-tech 分析 of his 団体／死体 and 発言する／表明する and do not believe it to be Abdel Bary.

European 人質s 解放する／自由なd earlier this year have identified the man as 存在 one of three jailers they dubbed 'The Beatles', who guarded them and oversaw 拷問 and mock 死刑執行s.

The 交戦的なs are thought to be in northern Syria, hiding in the 列 of the Middle East now under ISIS 支配（する）／統制する

During 広範囲にわたる 'debriefings' with 知能 officers, the 人質s were shown pictures of 嫌疑者，容疑者／疑うd UK and other European jihadists.

The former 捕虜s are understood to have been able to recognise around eight Britons they had 'come into 接触する' with during their months of 捕らわれた in a dozen 場所s around Syria.

The Daily Mirror 報告（する）／憶測d earlier this week that MI5 had identified a prime 嫌疑者，容疑者／疑う and was on the 瀬戸際 of 逮捕（する）ing known associates still believed to be in the UK.

The 最新の ビデオ of Mr Haines' 死刑執行 will however raise 恐れるs that - にもかかわらず two weeks having passed since the first 死刑執行 ビデオ was 解放（する）d - the 殺し屋 still appears to be able to carry out その上の 殺人，大当りs.