Four soldiers were killed and dozens injured in a fire at a military base in Alberta province, one of the worst peacetime tragedies to hit Canada's armed forces on home soil, Prime Minister Mark Carney said Sunday.

Brazil’s top electoral court has given Meta 24 hours to prove it is treating campaign content from incumbent President Luiz Inácio Lula da Silva and Senator Flavio Bolsonaro equally on its online platforms, threatening a daily fine for noncompliance. The ruling follows allegations from Lula's campaign that the social media giant is suppressing Lula’s campaign content ahead of Sunday’s closely contested presidential runoff.

Brazilian President Luiz Inacio Lula da Silva and right-wing senator Flavio Bolsonaro traded personal attacks in a heated presidential debate on Sunday, a week before a closely contested run-off. The rivals accused each other of lying and corruption while clashing over the economy, security and healthcare ahead of the October 25 vote.

Four Canadian service members were killed and 39 people hospitalised after a fire broke out during military training at a base in Alberta on Saturday, officials said. Premier Danielle Smith said Sunday that at least 19 patients were in critical condition, with some suffering severe burns requiring prolonged intensive treatment.

Since it was established in 1956, Manuel’s Tavern in Atlanta has hosted legendary Democratic leaders while its founder played a key role in the city’s move from a Republican to Democratic stronghold. With the state’s Democratic Senator Jon Ossoff leading the polls in the midterms amid rumours of a future presidential run, the tavern is once more at the heart of the political action.   

US Secretary of State Marco Rubio said Saturday that US President Donald Trump’s decision to waive sanctions and tariffs on Russia would last 60 days, as the move drew bipartisan criticism and raised fears in Ukraine that Washington could ease further restrictions on Moscow.

“No Kings, Vote Now” was the theme of a rally in Atlanta, one of many organised across the US on Saturday. While many demonstrators denounced US President Donald Trump’s policies, organisers said the rally was aimed at getting out the vote in the November 3 midterm elections and protecting democracy in America.

US President Donald Trump on Friday put a sweeping package of sanctions and tariffs targeting Russian energy revenues on hold, saying the waiver was in the country's national interest. The relationship between Washington and Kyiv has been fraying since Trump struck a deal with Moscow to ease sanctions in exchange for Russia flooding the global market with diesel to bring down fuel costs.

A White House Press official said Friday that Secretary ​Katie Zacharia was "let go" from her role after US President Donald Trump signaled she was on her way out, a week after he picked her for the post. Zacharia's credentials as an attorney had come under scrutiny and she admitted to not having passed the bar in an interview with Fox News on Thursday.

Famous for its cowboy culture, Wyoming is the least populated, the most rural and the most conservative of all the US states. With two weeks to go until the midterm elections, our reporters James André and Sylvain Rousseau travelled across this Republican stronghold and found that the party of US President Donald Trump is deeply divided in the Cowboy State. 

Following US President Donald Trump's October 9 announcement of an agreement signed with Russian President Vladimir Putin to import Russian diesel into the United States, a number of pro-Russian social media accounts began claiming that a Russian oil tanker was already carrying thousands of barrels of diesel to the United States. The ship was actually carrying fertiliser. 

A 16-year-old gunman killed three children and a teacher at Silver Rail Elementary School in Bend, Oregon, on Thursday before being killed by a community member who pursued him inside, police said. Two other people were wounded in the shooting.

A protester who heckled US President Donald Trump at his midterm rally in Youngstown, Ohio, was physically assaulted and removed from the event, but fake AI-generated photos recreating the incident are going viral online. The images carry digital watermarks identifying them as AI-generated. While footage confirms the woman was punched, there is no evidence to support Trump's claim that the protester was "paid" to disrupt his speech, as he mocked her weight. Vedika Bahl explains in Truth or Fake.

Ousted Venezuelan president Nicolas Maduro and his wife Cilia Flores pleaded not guilty on Thursday to new torture charges brought against them by US authorities, calling them “false allegations". The couple has been held in a New York jail since their capture in early January and is facing a new indictment accusing them of conspiring to torture political opponents and US citizens.

Delano D'Souza is pleased to welcome Peter Zalmayev, Founder and Director of the Eurasia Democracy Initiative, LIVE from Kyiv. As Zelensky declares Ukraine "done" with Trump's self-declared energy ceasefire and resumes strikes on Russian oil refineries, Zalmayev warns: "When you talk about the energy ceasefire, it presupposes two to be able to tango and to dance this dance." He challenges the legitimacy of Trump's unilateral announcement, made without agreement between Moscow and Kyiv, as Russia continues attacking Ukraine's energy infrastructure. Yet he cautions that Zelensky may need tactical restraint to preserve vital US support. Zalmayev also examines Western sanctions, frozen Russian assets, and Washington's pursuit of economic normalization with Moscow without meaningful Russian concessions.

In Georgia, Democrat Jon Ossoff’s seat is one of the key contests in the US mid-term elections on 3 November. In this state, which was won by Donald Trump in 2024, the incumbent senator is facing Republican Mike Collins. Our reporter Leela Jacinto visited Manuel’s Tavern, a historic bar in Atlanta that has been frequented for decades by Democratic politicians. There, patrons watched the debate between the two candidates.

US President Donald Trump said Thursday that he was cancelling plans to livestream the firing squad execution of a convicted military base shooter – a project that had sparked outrage in the United States. Nidal Hasan is scheduled to be executed on December 3 at Fort Hood in Texas, where he killed 13 people in 2009.

An association in Haiti is organising capoeira classes – an Afro-Brazilian martial art – in an attempt to reduce community violence and promote social reintegration. The Observers team spoke to its founder, Rodney Jean Marc, who said their doors are open to everyone, “even children in armed gangs”. The initiative takes place as the country's security situation has worsened in recent years.

SpaceX CEO Elon Musk on Wednesday called on Ukrainian President Volodymyr Zelensky to "go" after Kyiv raised doubts over US support for his country against the Russian invasion. A day earlier, Musk said any restrictions on Ukraine's use of the Starshield system would be due to decisions made by the US government after Zelensky called on Musk to restore Starlink, which Kyiv says has been slowed down.

Thousands of Colombians protested peacefully across the country on Wednesday against right-wing President Abelardo de la Espriella, in the opposition’s first major demonstrations since he took office in August. Former leftist president Gustavo Petro led a rally in Bogota joined by trade unionists, Indigenous groups, students and feminist activists.