Oil prices hit highest level since 2014 over supply concerns
By Sarah Provan & Tom Wilson
Oil to breach $100 a barrel later this year- Goldman Sachs
By Swati Verma, Louise Heavens & Shinjini Ganguli
Oil climbs as supplies expected to remain tight
By Noah Browning & Bozorgmehr Sharafedin
Oil hit 7-year highs as tight supply bites
By Stephanie Kelly