Trump said that he would deliver remarks to formally accept his party's nomination for president but gave no other details.
Trump also told a press conference in Singapore that he would stop US joint annual military exercises with South Korea, which he called "provocative" and "expensive."
Trump last week claimed that he had proof that the virus came from the Wuhan Institute of Virology.
Trump probably misunderstands situations on Wall Street. Because the US stock market has risen for nine consecutive years from 2008, he may think Wall Street has assembled enough money to satisfy US companies' growth over the next 5 to 10 years.
Trump has dubbed his three challengers "The Three Stooges." None of them is expected to generate enough support to defeat Trump.
Trump announced in a tweet he was ousting H.R. McMaster, his current national security adviser. Bolton, 69, who has long been a polarizing figure in Washington foreign policy circles, becomes Trump's third national security adviser in 14 months.
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Trump's tariffs on steel and aluminum imports will take effect in 15 days, with Canada and Mexico indefinitely exempted from the duties, according to people outside the White House who were briefed on the plans Thursday. The people spoke on condition of anonymity ahead of the president's signing of the orders.
TuSimple's latest funding round is led by Chinese social media company Sina and others like venture capital funds Composite Capital and Trinity Investment. In August, the company raised million from Sina and other investors including US graphics chip maker Nvidia.
Trump and other officials will speak at the Tuesday event, which will focus on informing the public about how distribution of the vaccine will work.
Trump hasn't disclosed his tax returns since taking office in 2017, breaking both his promise made during the 2016 presidential campaign and a tradition kept by US presidential candidates for decades.