A planned six-day ceasefire in and around a Russian-occupied city in southern Ukraine held for its first day and night, officials said Wednesday, but Moscow and Kyiv continued to batter each other elsewhere.

The localized truce in the devastated southern city of Oleshky began Tuesday and is due to last through Sunday as a humanitarian operation races to get urgently needed food and medicine to about 2,000 remaining residents, as well as evacuate those who want to leave.

Flávio Bolsonaro, the defeated Brazilian presidential candidate, fled his country to Argentina and then Ecuador alongside his wife and two daughters, Argentina's migration authority said on Wednesday. The 45-year-old senator and his family were granted United States visas the day before by the Trump administration.

The move is almost certain to cause a big diplomatic rift between Brazil's newly reelected President Luiz Inácio Lula da Silva and his Argentine counterpart Javier Milei, who traveled to Brazil to take part in Bolsonaro's campaign.

A high-speed train slammed into the rear of another train that had stopped, derailing two cars and killing at least 30 people on Wednesday in central Spain, according to local media.

Spanish authorities initially reported 10 deaths, but Esther Padilla, spokeswoman for the Castilla La Mancha region, added "that number will surely rise."

The United Nations is set to vote Wednesday on a resolution condemning the decades-long U.S. economic embargo on Cuba as the Trump administration intensifies its campaign to undermine Cuba's socialist government, including by threatening military intervention.

The annual exercise aimed at calling out the U.S. government's "maximum pressure policy" has been put before the U.N. General Assembly for the past 34 years, and each time the resolution has received overwhelming support from the 193 member states. Last year, the vote was 165-7, with 12 abstentions.

Serbian police said on Wednesday that an unidentified assailant attacked a guard with knives outside the Israeli Embassy in Belgrade and was killed just after midnight.

Interior Minister Ivica Dacic said that police were treating the incident as a "terrorist attack" and had raised the terror threat to the highest level and stepped up police presence at key locations.

The leaders of Norway and Finland held a "frank and substantive" phone conversation with Vladimir Putin on Tuesday, the first call between pro-Ukrainian European leaders and the Russian president in more than a year.

President Donald Trump's strategy for the U.S. midterm elections has one main ingredient -- more Donald Trump. But his historic unpopularity may hinder Republicans instead of helping them.

Flavio Bolsonaro's Liberal Party has recognized the outcome of Brazil's presidential runoff, despite the candidate's objections to the poll won by leftist President Luiz Inacio Lula da Silva.

President Emmanuel Macron has accused social media of "damaging our democracies", as he lamented the turmoil France faces ahead of an election to pick his successor, as authorities grapple with nationwide cost-of-living protests that have spilled over into violence.

Qatar on Tuesday said Iran must show good faith with its neighbors to prevent further escalation, following renewed efforts to end the U.S.-Iran war.