The American ExxonMobil, 19 years after leaving Venezuela, signed a memorandum with the country's government and state-owned PDVSA to assess the possibilities of oil production, writes the Financial Times. The document is not binding: the company emphasizes that real investments will require legislative changes and capital protection. A few months ago, ExxonMobil executives called the country "unsuitable for investment," but this year Venezuelan authorities passed a law opening up the oil sector to private business.