CNBC | Oil rises above $30 on hopes of deal to tackle glut CNBC Oil rose above $31 a barrel on Tuesday, lifted by hopes that OPEC and non-OPEC producers may be edging closer to a deal to tackle one of the biggest supply gluts in decades. The Organization of the Petroleum Exporting Countries is making renewed calls ... Oil retakes $30 as OPEC members hint at 'cooperation' Oil rises further above $30 on hopes of deal to tackle glut Opec pleads for Russian alliance to smash oil speculators |