Tehran can still weaponise oil as its last line of defence, but it’s a huge risk, says Javier Blas for Bloomberg Opinion. LONDON: One can look at oil and the Middle East through two lenses. Magnify every detail from the attacks on Iran and its responses and a chaotic picture emerges. When the market reopened on Sunday night (Mar 1), oil prices jumped 10 per cent as a result. But seen from a wider angle – looking broadly at the global economy – the energy picture does not appear as scary, even