President Joe Biden is making a big bet on the US economy powering him to re-election next year with the unveiling of a "Bidenomics" pitch to voters this week. After inheriting an economy ravaged by the Covid-19 pandemic, Biden has had a hard time persuading Americans that he's doing a good job. A recent poll found Biden's likely 2024 rematch rival, Donald Trump, leading by 18 percentage points on the question of who handled the economy better. Biden will start making his case today with a speech in Chicago, and the White House thinks it can turn the tables.

SEE HOW BIDEN WILL TRY TO SELL VOTERS ON 'BIDENOMICS'

The US on Tuesday imposed sanctions aimed at disrupting gold mining activities that fund the Wagner Group in Africa, vowing to hold the mercenaries accountable for abuses days after they staged a mutiny in Russia. The measures against the Wagner Group had been previously planned but were briefly put on hold as US officials sought to avoid appearing to favor a side in a power struggle between the mercenaries' chief Yevgeny Prigozhin and Russian President Vladimir Putin.

GET THE LATEST ON THE CLASH BETWEEN PUTIN AND WAGNER

The warnings are coming from all angles: artificial intelligence poses an existential risk to humanity and must be shackled before it is too late. But what are these disaster scenarios and how are machines supposed to wipe us out? Most disaster scenarios start the same: machines will outstrip human capacities, escape human control and refuse to be switched off. But because these machines do not yet exist, imagining how they could doom us is often left to philosophy and science fiction.

SEE HOW EXPERTS IMAGINE AI'S OVERTHROW OF HUMANITY

What duo is considered the first developers of an AI program? When?

Tuesday's answer: The US opened Guantanamo Bay Naval Base in 1903. In 1934, the US and Cuba signed an annual lease agreement of $4,085 ($90 per acre for the oceanfront property) that is still in effect.