Prime Minister Andy Burnham faced lawmakers in the House of Commons on Tuesday for the first time since becoming UK leader six weeks ago, with wars in Europe and the Middle East weighing on his promise to kick-start the economy, ease the cost of living and oversee a radical redistribution of power from London to Britain’s regions. On the day parliament returned from its summer break, Burnham said he would “unlock a feeling of positivity and possibility in every postcode in Britain”. “We can make...