Chinese AI chip rivals Nvidia H200 in performance tests
A Chinese-made AI chip has matched Nvidia’s H200 in tests conducted by its developer, marking a potential breakthrough in China’s effor...
The United States has revoked the visa of Brazil's ambassador in Washington, escalating a growing diplomatic dispute between the two countries over ambassadorial appointments and the treatment of diplomats.
The move affects Ambassador Maria Luiza Ribeiro Viotti, although she has not been ordered to leave the United States. A senior U.S. State Department official said her visa would be reinstated if the current diplomatic impasse is resolved.
"The action was that the visa of a senior diplomat here was revoked or cancelled. That is not the same thing as kicking the person out of the country," the official said.
The row centres on Brazil's refusal to grant formal approval, known as agrément, for President Donald Trump's nominee to serve as U.S. ambassador to Brazil.
Washington also accused Brazil of denying visas to several American diplomats, saying it had responded with reciprocal measures after weeks of unsuccessful negotiations.
"Basically we've had a situation in which our diplomats were being denied the ability to do routine common work between the two countries," the State Department official said.
"We've taken reciprocal action with respect to a Brazilian diplomat here to make the point that it can't always be one-sided."
Brazil has yet to publicly respond to the visa revocation.
Relations between Washington and Brasília have become increasingly strained in recent months.
Last month, Brazil refused visas for officials from the U.S. State Department's Bureau of Democracy, Human Rights and Labour. Brazilian authorities said the planned visit was intended to interfere with the country's electoral system ahead of October's elections.
The diplomatic standoff follows wider disagreements between President Donald Trump's administration and Brazilian President Luiz Inácio Lula da Silva. U.S. officials have accused Lula's government of restricting conservative voices and influencing judicial proceedings.
Brazil has rejected those claims and accused Washington of trying to shape politics in Latin America.
Despite the latest escalation, the State Department said it wanted to restore normal relations.
"We want to be back in a situation where we have a normal, productive, transparent relationship with our colleagues," an official said.
The Middle East conflict remains tense as diplomatic efforts continue alongside renewed Houthi attacks. Iran says it remains open to mediation, while the Saudi-led coalition says it intercepted a ballistic missile fired towards the kingdom.
Rescuers searched the wreckage of two high-speed trains in central Spain on Thursday as the death toll rose to a provisional 74, making it the country's second fatal high-speed rail disaster this year.
At least 68 people have been killed after two high-speed trains collided in Spain on Wednesday, in the second deadly rail disaster in less than a year on a major route linking Madrid with the southern Andalusia region.
Qatari mediators returned to Tehran on Friday as part of efforts to reach a deal between the U.S. and Iran, according to an official briefed on the talks.
UN human rights experts comprising a group including Special Rapporteurs and independent experts who are part of the UN Human Rights Council, have criticised French authorities over their handling of nationwide student protests.
A Chinese-made AI chip has matched Nvidia’s H200 in tests conducted by its developer, marking a potential breakthrough in China’s efforts to reduce its dependence on foreign technology.
A powerful El Niño is driving extreme weather worldwide, leaving millions facing drought, wildfires and destructive storms as governments scramble to respond to the growing crisis.
A high-speed train involved in Wednesday's deadly collision in Spain was travelling at between 160 and 200 kilometres per hour, far above the 40 km/h safety limit, according to a preliminary investigation published on Friday.
Evacuations and the provision of humanitarian aid in the Russian-occupied southern Ukrainian town of Oleshky have begun, a senior Ukrainian official said on Friday. In a statement on Telegram, David Arakhamia said a six-day ceasefire was holding, and that more details would follow.
Hackers have pulled off a staggering $6.3 billion cryptocurrency heist targeting Binance, shaking confidence in one of the world's biggest digital asset exchanges and sending crypto prices tumbling. U.S. analysts suspect North Korea was behind the attack.
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