Eric Watkins Oil Diplomacy Editor Colombia's government has made considerable strides in recent years to improve the security conditions for oil and gas companies operating in the country. But more effort is needed, if Colombia's growing reserves are to be turned into revenues. "Insurgent attacks against oil infrastructure have increased in isolated rural areas this year, in an attempt by guerrilla groups to undermine the government's efforts to strengthen the oil sector," said Diego Moya Ocampos of IHS Global Insight. Colombia's President Juan Manuel Santos is well aware of the problem, last week announcing plans to improve security for international oil companies (IOCs) in Caq...