The United Arab Emirates and Qatar have extended a concession for an offshore oilfield that the two share—but warily, since the UAE is part of a regional blockade against Qatar, led by Saudi Arabia. While both countries acknowledged the concession extension, the Emirates’ Supreme Petroleum Council was quick to state that, first, the concession was not awarded to Qatar petroleum and second, that “There is no commercial or trading relationship being established between the UAE and Qatar by the extension of this concession." Earlier…