Novak Djokovic arrived in his native Serbia on Monday after being deported from Australia because he was not vaccinated against COVID-19, ending his hopes of defending his Australian Open title.

The tennis star's exit from Australia closed at least the first chapter in a dizzying drama that has resonance in the world of elite sports, Australian pandemic politics and the polarized debate over the COVID-19 shots. But at the same time another chapter opened as questions arose over whether he would be barred from the next Grand Slam tournament, the French Open.

A senior U.N. official said she is pushing for Libya to hold elections by June after the county missed a December deadline to elect its first president since the 2011 ouster and killing of longtime dictator Moammar Gadhafi.

Stephanie Williams, the U.N.'s special adviser on Libya, told The Associated Press late Sunday that it is still "very reasonable and possible" for the country's 2.8 million voters to cast their ballots by June in line with the U.N.-brokered 2020 roadmap.

Jordan's military has said that an army officer was killed in a shootout with smugglers on the country's northern border with Syria.

A Jordanian military website said Capt. Muhammad Yassin Musa al-Khudayrat was killed and three others were injured when a group of smugglers opened fire on border guards.

North Korea fired two suspected ballistic missiles into the sea Monday in its fourth weapons launch this month, South Korea's military said, with the apparent goal of demonstrating its military might amid paused diplomacy with the United States and pandemic border closures.

South Korea's Joint Chiefs of Staff said the North likely fired two short-range ballistic missiles from an area in Sunan, the location of Pyongyang's international airport. The missiles were launched four minutes apart Monday morning and flew around 380 kilometers (236 miles) on a maximum altitude of 42 kilometers (26 miles) before landing in waters off the country's northeastern coast, it said.

On a trip to the United Arab Emirates, the president of South Korea has reportedly reached a preliminary multibillion-dollar deal to sell Seoul's surface-to-air missiles to Abu Dhabi and pledged deeper cooperation with the Gulf Arab federation.

After South Korean President Moon Jae-in met Emirati Prime Minister Sheikh Mohammed bin Rashid Al Maktoum in Dubai, the countries signed a memorandum of understanding for the UAE's purchase of a South Korean mid-range missile defense system valued at some $3.5 billion, South Korea's Yonhap news agency reported.

Environmental protesters demanding the cancelation of plans for lithium mining in western Serbia took to the streets again, blocking key roads and for the first time a border crossing.

Traffic on the Balkan nation's main north-south highway was halted for more than an hour in Belgrade, the capital, along with several other roads throughout the country, including one by Serbia's border with Bosnia.

Tu BiShvat, the Jewish new year of the trees, barely registers on most Jewish calendars, except as an occasion to plant trees or eat fruit and nuts.

But the one-day holiday, which begins Sunday (Jan. 16), has gotten a boost these past few years as environmentalists have reimagined it as the Jewish Earth Day. This year, Tu Bishvat started early with the Big Bold Jewish Climate Fest, a five-day online event (Jan. 10 -14) that has drawn hundreds of Jews to reexamine ways to make climate action a central priority of the Jewish community.

Their state budgets flush with cash, U.S. Democratic and Republican governors alike want to spend some of the windfall on projects aimed at slowing climate change and guarding against its consequences, from floods and wildfires to dirty air.

Democratic governors such as California's Gavin Newsom and Washington's Jay Inslee have been clear about their plans to boost spending on climate-related projects, including expanding access to electric vehicles and creating more storage for clean energies such as solar. Newsom deemed climate change one of five "existential threats" facing the nation's most populous state when he rolled out his proposed state budget this past week.

Tesla is turning to Mozambique for a key component in its electric car batteries in what analysts believe is a first-of-its-kind deal designed to reduce its dependence on China for graphite.

Elon Musk's company signed an agreement last month with Australia's Syrah Resources, which operates one of the world's largest graphite mines in the southern African country. It's a unique partnership between an electric vehicle manufacturer and a producer of the mineral that is critical for lithium-ion batteries. The value of the deal hasn't been released.

A World Health Organization official warned last week of a "closing window of opportunity" for European countries to prevent their health care systems from being overwhelmed as the omicron variant produces near-vertical growth in coronavirus infections.

In France, Britain and Spain, nations with comparatively strong national health programs, that window may already be closed.