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Photo: Scott Olson/Getty Images

Former Vice President Joe Biden took aim at President Trump during a campaign stop in Cedar Rapids, Iowa on Tuesday evening, saying: "Enough's enough, man," and accusing the president of "wag[ing] war on Twitter," reports CNN.

Why this matters: Biden used his platform in Iowa to position himself against Trump, rather than the other members of the crowded 2020 Democratic field. Earlier on Tuesday, newly released polls illustrated that Biden is the current frontrunner in the race.

What he said:

  • Biden began the rally by citing Trump's statements about a 2017 white nationalist rally in Charlottesville, Va. Biden said everybody was waiting for Trump to condemn the actions of the white nationalists, but instead said there are "very fine people on both sides" of the protest.
  • The former VP took a swing at GOP tax cuts, citing a $1 trillion loophole for the wealthy and a boost to the national deficit.
  • Biden took aim at Trump's education policy saying: "We need to end the Trump-DeVos education agenda," and doubled down on his stance for free community college.
  • He also told reporters that he's not going to argue with the other 2020 candidates because they "agree on basically everything," per CNN.

Go deeper: Joe Biden: Everything you need to know about the 2020 candidate

Go deeper

WHO warns against travel bans on southern African countries

Matshidiso Moeti, World Health Organization regional director for Africa. Photo: Sylvain Gaboury/Patrick McMullan via Getty Images

The World Health Organization called on countries Sunday to not impose travel bans on southern African nations amid concerns over the new COVID-19 Omicron variant.

Why it matters: The U.S. and countries in Europe and the Asia-Pacific announced travel restrictions in response to Omicron, which was first detected in South Africa. It's since spread to several European countries, Canada, Israel, Australia and Hong Kong. The WHO noted in a statement that only two southern African nations have detected the new variant.

Updated 4 hours ago - Health

First North American Omicron cases identified in Canada

COVID-19 testing personnel at Toronto Pearson International Airport in September. Photo: Steve Russell/Toronto Star via Getty Images

The first two cases of the new Omicron variant have been detected in North America, the Canadian government announced Sunday evening.

Driving the news: The World Health Organization has named Omicron a "variant of concern," but cautioned earlier on Sunday that it is not yet clear whether it's more transmissible than other strains of COVID-19.

7 hours ago - Health

WHO: Not yet known whether Omicron leads to more severe disease

Photo illustration: Pavlo Gonchar/SOPA Images/LightRocket via Getty Images

The World Health Organization on Sunday said that it is not yet clear whether the newly discovered Omicron variant is more transmissible than other strains of the COVID-19 virus.

Why it matters: The agency's statement comes as the variant, discovered in South Africa, has already been detected in European and Asian countries.