In a historic first, Mexico's struggling state-run Pemex energy company will team up with private firms for a deep-water oil project, officials said Friday.

Pemex will "farm out" the $11 billion Trion field in the Gulf of Mexico, which has potentially 480 million barrels of light crude, said company director general Jose Antonio Gonzalez Anaya.

Ukraine said Friday it would not purchase natural gas from Russia at the price offered by Moscow and would instead tap European markets as it continues its shift toward the West.

German Finance Minister Wolfgang Schaeuble warned Friday that if Britain voted to leave the European Union, it wouldn't have access to the single market like non-members Norway and Switzerland do.

Turkey's economy grew a robust 4.8 percent in the first quarter of this year, continuing its resilient performance from 2015, the statistics office said on Friday.

Pushed by international advisers and concerned about its image, conservative Saudi Arabia is engaged in an unusual display of openness to promote a wide-ranging economic transformation plan.

The U.S. House of Representatives has passed a bipartisan bill that is to allow Puerto Rico to restructure its $70 billion debt and avoid a massive default next month.

Locked in recession for more than a decade and increasingly unable to service its debt, Puerto Rico is blocked by U.S. law from getting formal bankruptcy protection, which would allow a court to force creditors to write off large amounts of its debt.

Britain's biggest retailer, supermarket group Tesco, said Friday it was selling its Turkish business as its international arm focuses on its operations in Central Europe and Southeast Asia.

Tesco, which is slowly turning around its performance after a record annual loss in 2014/15, said in a statement it was offloading also its mainly British restaurant chain, Giraffe, after only three years.

Crude prices dipped further in Asia on Friday on a stronger dollar, dampening a rally that saw the commodity hitting 11-month highs earlier in the week.

The losses were in line with a sell-off on equities markets from Asia to the Americas fuelled by worries about the state of the global economy.

The yen strengthened Friday in Asia as investors shifted into safer investments ahead of central bank meetings in the U.S. and Japan, while Britain's upcoming EU membership vote was also in focus.

Greek Finance Minister Euclid Tsakalotos on Thursday urged economic powerhouse Germany to invest more in Europe and help stimulate growth in the lackluster European economy.