Spain's Prime Minister Mariano Rajoy promised Friday the country's economy would "take off" again in 2015 but opponents branded his optimism "indecent" with many Spaniards still suffering from cutbacks.

After a gradual return to growth, "2014 has been the year of recovery and 2015 will be the year when our economy really takes off," Rajoy told a news conference.

Construction on a massive new international passenger airport in Beijing began Friday, state media reported, as booming demand for travel to and from China stretches the capacity of existing facilities.

Beijing's current international airport is the world's second busiest, but also one of the most delayed, with fewer than 20 percent of commercial passenger flights leaving on schedule according to a 2013 report.

Japan Post on Friday confirmed a long-awaited plan to list its shares in Tokyo with the government-owned firm set for what could be one of the world's biggest share sales.

The parent company, along with its insurance and banking units, would launch an initial public offering in the middle of the 2015 fiscal year, which begins in April, but executives declined to comment on the size of the initial sale.

Oil prices rose in Asia Friday as dealers reacted to a surprise Islamist attack on Libya's main oil terminals that left 22 soldiers dead. 

US benchmark West Texas Intermediate for February delivery rose 28 cents to $56.12 in mid-morning trade, while Brent for February gained 13 cents to $60.37.

China tied the restive far-western region of Xinjiang closer to the rest of the country Friday, opening a high-speed rail line between its capital Urumqi and Lanzhou, in neighboring Gansu, nearly 1,800 kilometers away. 

A slick bullet train took off from Lanzhou West Railway Station at 10:49 am (0249 GMT), with female attendants in Uighur and other ethnic costumes serving 622 passengers, live footage on state broadcaster China Central Television (CCTV) showed. 

Saudi Arabia, the world's largest crude exporter, on Thursday announced a 2015 budget with a huge $38.6 billion deficit due to the sharp decline in oil prices but still raised spending.

A statement read on state-run television after a cabinet session said spending for 2015 is projected at 860 billion riyals ($229.3 billion) and revenues at 715 billion riyals ($190.7 billion).

The plunge of the ruble hasn't left only Russians shell shocked -- foreign workers from traders to maids are considering bailing out as Moscow turns from an El Dorado into a financial black hole.

The phenomenon is not quantifiable nor is there anything to indicate an exodus of expatriates is under way, but many admit to considering whether it is time to leave Russia after the ruble shed a quarter of its value in a couple of days last week.

Ramon Holgado used to sleep outside in a cardboard box, but he is back on his feet this Christmas -- guiding homeless-themed tours of the Barcelona streets he lived rough in.

As well as filling them in on the history and showing them some nice views, Holgado, 64, gives visitors an insight into the poverty that has ravaged the Catalonian capital since the economic crisis struck.

Saudi Arabia has given a "final warning" to avoid delays on an $8.2 billion high-speed rail project which Spanish and Saudi firms are helping to build.

The Haramain High Speed Rail system is to transport Muslim pilgrims, as well as regular travellers, 450 kilometres (280 miles) between the holy cities of Mecca and Medina via the Red Sea port of Jeddah.

On a sprawling, lush cocoa plantation in Mukono outside the Ugandan capital Kampala, farmers have been sampling chocolate for the first time ever.

"When we gave our farm manager the first product to taste his face was so amazing, he was saying 'really this is coming out from what we are doing?'" said Felix Okuye, 28, the executive director and co-founder of startup Pink Food Industries.