It was a preemptive invasion, like the invasion into Iceland.
In 1940, the UK invaded Iceland, whose jurisdiction was transferred to the US in 1941.
Iceland was at that time a territory of Denmark, which was an ally to Germany.
It s worth an examination into the legitimacy and the pin-point killing technique in the case of the UK killing two Britons in Syria—a foreign territory that is now on the verge of a total collapse. Revised ay 1330
英國首相卡麥隆（David Cameron）昨天披露，英軍以無人機對伊斯蘭國（Islamic State）在敘利亞的大本營拉卡（Raqqa）發動攻擊，導致英籍好戰分子利亞汗（Reyaad Khan）與阿敏（Ruhul Amin）喪命。
Islamic State conflict: UK 'would repeat Syria drone strike'○BBC(2015.09.09)
The UK would not hesitate to launch more secret drone strikes in Syria to thwart terror plots,
has said. Defence
He said the RAF strike that killed two British Islamic State jihadists was a "perfectly legal act of self defence".
There are "other terrorists" involved in "other plots that may come to fruition" in weeks or months, he said.
Meanwhile, the father of two more Britons thought to be in Syria said he believed they were now on a "hit list".
would not be drawn on whether the
UK had a "hit list". Mr Fallon
But he told the BBC: "There are a large number of individuals - not all British - out there in Syria... who are actively involved in planning armed attacks here in Britain."
BBC security correspondent
said if such a list existed, it "would be something drawn up
digitally", and based on intercepting online communications, or human
informants. Frank Gardner
A debate over the UK's use of drones started after MPs were told on Monday that Cardiff-born Reyaad Khan, 21, had been killed in a precision strike in Raqqa by a remotely piloted aircraft.
said his friend had "no fear of death at
The RAF strike was the first targeted UK drone attack on a British citizen, and was based on information gleaned from the UK's secret intelligence services, the BBC understands.
"We wouldn't hesitate to take similar action again,"
told BBC Radio 4's Today