MORE drone strikes could be launched in Syria within weeks, targeting members of the self-proclaimed Islamic State (Isis) suspected of plotting attacks in Britain, Defence Secretary Michael Fallon announced yesterday.

The news comes after Prime Minister David Cameron revealed to MPs on Monday that the RAF had secretly killed two British Isis fighters who were alleged to have planned terrorist activities in Britain.

The government would “not hesitate” to repeat air strikes as “there are other terrorists involved in other plots” that could be acted out “over the next few weeks,” Mr Fallon said on BBC Radio 4’s Today programme yesterday.

He estimated that there were at least three British Isis fighters that posed a threat but refused to give an exact number.

Mr Fallon added that MPs should vote against the “absurdity” of British forces not being able to bomb Isis in Syria, when it does in Iraq. Parliament voted against military action in Syria two years ago.

The government claimed that no civilians were harmed in the “precision” drone bombing on August 21 which targeted Reyaad Khan, from Cardiff, and Ruhul Amin, from Aberdeen, in the Isis stronghold Raqqah.

The missile attack was carried out in “self-defence” and “entirely lawful,” claimed Mr Cameron.

However, the Stop the War Coalition said that bombing Syria would “do nothing to halt Isis” but would “add fuel to the flames of war,” leading to increased terror attacks and more displaced people.

Coalition convener Lindsey German told the Star: “Air strikes and bombings are exactly the problem that led to the refugee crisis in the first place. We have to find another solution, as it needs to be about trying to make peace.”

Ms German added: “Cameron is trying to legalise extrajudicial killings in the name of protecting British society. This goes beyond any international law allowing countries to defend themselves.”

Green MP Caroline Lucas tweeted that the government should publish the legal advice behind the operations to “make case for legitimacy.”

The SNP also demanded the release of the intelligence data that led to the killing of Mr Amin, a Scot.

Mr Cameron told MPs on Monday that this was the “first occasion in modern times” that a secret air strike had been carried out, but said the advice would not be made public.