USA's ultimatum to WHO

President Donald Trump gets up at the conclusion of a meeting with restaurant industry executives about the coronavirus response, in the State Dining Room of the White House, Monday, May 18, 2020, in Washington. (AP Photo/Evan Vucci)

President Trump gets up at the conclusion of a meeting with restaurant industry executives about the Covid response, in the State Dining Room of the White House Source: AP

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Tensions between the United States and China are running high after a letter from President Trump reached the World Health Organisation, criticising the way it has dealt with the pandemic and threatening to stop funding.

Meanwhile President Trump revealed he's taking a malaria drug as a preventive measure against coronavirus, despite it not being a proven treatment against the illness.

The US Food and Drug Administration has cautioned against the use of hydroxychloroquine for COVID-19 outside a hospital setting or clinical trial due to a risk of heart rhythm problems.

But Mr Trump has told reporters he's not concerned about possible side-effects.

Journalist Giampiero Gramaglia reports.