DAVID CAMERON insisted yesterday he had a “fully worked through” strategy to deal with Islamic State (Isis) extremists as he prepared for his second holiday this month.

The Labour Party and senior Church of England figures have branded as “incoherent” the Prime Minister’s approach to the terrorist group, which has taken over vast swathes of territory in Iraq and Syria.

But he did not respond to calls from Anglican canon Andrew White of St George’s Church in Baghdad for the British government to offer asylum to up to 30,000 persecuted Iraqi Christians.

Britain has joined other EU powers in delivering aid to Iraqi communities under siege from Isis, while saying it would respond “favourably” to requests for arms from Kurdish Peshmerga fighters who were battling the group.

Mr Cameron failed to answer accusations of hypocrisy for having backed the insurgency in Syria which put Isis on the map.

The terror group’s equipment and funds come disproportionately from Western powers and regional allies such as Saudi Arabia.

Communist Party general secretary Robert Griffiths said the government’s “top priority should be to enforce the UN security council resolution preventing the flow of arms to Isis and its allies.

“It is a tragedy that US, British and Nato support for Syrian rebels has led to this catastrophe.”

At the weekend the government said it was deploying Rivet Joint surveillance aircraft to Iraq to “provide vital intelligence.” They would be accompanied by RAF Tornado fighter-bombers, although unlike the United States, Britain is not thought to be launching air strikes in the country.

And Mr Cameron took to the Daily Telegraph to announce Britain would be at war with Isis’s “poisonous ideology” for the rest of his political life — while reiterating yesterday that he was “absolutely clear … Britain is not going to get involved in another war in Iraq.”

He did not regard the crisis as serious enough to stop him heading to Cornwall this week, saying he was always “within a few feet of a Blackberry and an ability to manage things.”

The PM returned from a holiday in Portugal last week.