Spain's conservative opposition leader Saturday hit out at the possible sale of a stake in oil major Repsol to Russian energy group Lukoil, saying he would do "everything possible" to prevent it. "Nobody in Europe has sold its energy supply and put it in the hands of a Russian company," Mariano Rajoy told a political meeting. He said such a sale would be "immoral and unjust" and he would do "everything possible to prevent it happening." He was backed by Socialist former prime minister Felipe Gonzalez, who also opposed any deal. Spanish media said Lukoil could acquire 29.9 percent of...