Air France-KLM said Monday it would add a surcharge of up to 12 euros ($13,50) on its tickets to try to offset the cost of using more expensive sustainable aviation fuel.

Air France said that the fuel levy would be added to tickets from January 10.

Emerging economies should gird for possible rough times as the US Federal Reserve prepares to raise interest rates and world economic growth slows because of the Omicron variant of Covid-19, the IMF warned Monday.

The International Monetary Fund, which is scheduled to release updated economic forecasts on January 25, said that for now global economic recovery from the ravages of the pandemic should continue this year and next.

Global shares were mixed Monday after Wall Street fell on worries the Federal Reserve will raise interest rates as soon as March.

Frankfurt and Shanghai advanced. Wall Street futures were higher. Seoul declined while London was little-changed. Japanese markets were closed for a holiday.

Foreign ministers from Saudi Arabia and other Arab Gulf states are visiting Beijing for meetings with officials from the world's second largest economy, a leading consumer of oil and source of foreign investment.

The Chinese Foreign Ministry on Monday gave no details of the agendas for the visits, but said they were expected to "deepen relations between the two sides."

Unrest in OPEC+ member Kazakhstan has pushed up oil prices as investors fear supply interruptions, but the uranium market appears less affected despite the Central Asian country being the world's second largest producer.

China's lockdowns of big cities to fight coronavirus outbreaks are prompting concern about more disruptions to global industries after two makers of processor chips said their factories were affected.

That has added to unease about the omicron variant's global economic impact. Analysts warn Vietnam, Thailand and other countries important to manufacturing chains might impose anti-disease measures that would delay deliveries.

Consumer prices in the 19 countries that use the euro currency soared at a record rate, led by a surge in food and energy costs, figures showed Friday.

Inflation rose to 5% in December compared with a year earlier, according to Eurostat, the European Union's statistical office. That is the highest level in the eurozone since recordkeeping began in 1997, breaking the record of 4.9% only just set in November.

Budget airline Ryanair said Friday that it plans to stop serving Frankfurt Airport, Germany's busiest, at the end of March. and close its base there.

Ryanair said it is closing its base in Frankfurt and reallocating its five planes there to other airports that "have responded with lower airport charges to stimulate traffic recovery."

Global stock markets wavered Friday as dealers awaited vital U.S. jobs data and mulled the Federal Reserve's readiness to hike interest rates aggressively.

Car sales in Germany tumbled to their lowest level since reunification in 2021, official figures published Wednesday showed, following a significant pandemic-related fall in 2020.