The United States has imposed sanctions on two groups linked to Iranian and Russian efforts to target American voters with disinformation ahead of this year's election.

Treasury officials announced the sanctions Tuesday, alleging that the two organizations sought to stoke divisions among Americans before November's vote. U.S. intelligence has accused both governments of spreading disinformation, including fake videos, news stories and social media posts, designed to manipulate voters and undermine trust in U.S. elections.

A U.S. Army veteran who drove a pickup truck into a crowd of New Year's revelers in New Orleans, killing 15 people, had posted videos to social media hours before the carnage saying he was inspired by the Islamic State group and expressing a desire to kill, the president said.

The FBI said it was investigating early Wednesday's attack in which the driver steered around a police blockade and slammed into revelers before being shot dead by police as a terrorist act and did not believe he acted alone.

Shock and dismay prevailed in Montenegro on Thursday after a gunman fatally shot 12 people, including two children, in a western town before killing himself.

At least four others were wounded in the shooting rampage in Cetinje on Wednesday that followed a bar brawl, officials said. This was the second such incident in the town in the past three years.

International condemnation has poured in for the attack on a crowd of New Year's Eve revelers in New Orleans which killed at least 15 people and wounded dozens more.

At least 10 people were killed and 30 injured when a vehicle plowed into a crowd in a popular tourist district in the U.S. city of New Orleans, city authorities said Wednesday.

Iran will hold nuclear talks with France, Britain, and Germany on January 13 in Switzerland, local media reported on Wednesday, quoting a foreign ministry official.

Revellers across the world ushered in 2025 on Wednesday, with huge crowds waving goodbye to the old year that brought Olympic glory, a dramatic Donald Trump return, and turmoil in the Middle East and Ukraine.

Ukraine on Wednesday halted Russian gas supplies to European customers that pass through the country, almost three years into Moscow's all-out invasion of its neighbor, after a prewar transit deal expired.

Ukraine's energy minister, Herman Halushchenko, confirmed on Wednesday morning that Kyiv had stopped the gas flows "in the interest of national security."

French aircraft have bombed Islamic State positions in Syria, Defense Minister Sebastien Lecornu said Tuesday, in its first such strike on the country's soil since the fall of Bashar al-Assad.

"Our armed forces remain engaged in battling terrorism in the Levant," Lecornu wrote on X while on a New Year visit to French U.N. peacekeepers in Lebanon.

Cities around the world are readying to ring in the New Year with celebrations highlighting local cultures and traditions, after a year roiled by ongoing conflict and political instability.

Countries in the South Pacific Ocean will be the first to welcome 2025, with midnight in New Zealand striking 18 hours before the ball drop in Times Square in New York.