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Washington, May 21: US President Donald Trump China is on a "massive disinformation" campaign and is desperately trying to deflect the "pain and carnage" that it spread throughout the world, US President Donald Trump has said, upping the ante on Beijing over its handling of the coronavirus outbreak.

Trump, who has expressed disappointment over China's handling of the COVID-19 pandemic, claimed that it was the "incompetence" of Beijing that led to the mass killing across the globe. 

"China is on a massive disinformation campaign because they are desperate to have Sleepy Joe Biden win the presidential race so they can continue to rip-off the United States, as they have done for decades, until I came along!" Trump said in a tweet on Wednesday.

"Spokesman speaks stupidly on behalf of China, trying desperately to deflect the pain and carnage that their country spread throughout the world. Its disinformation and propaganda attack on the United States and Europe is a disgrace… It all comes from the top. They could have easily stopped the plague, but they didn't," he said in a series of tweets.

Trump blamed China for spreading the coronavirus globally and accused it of being incompetent.
"Some wacko in China just released a statement blaming everybody other than China for the Virus which has now killed hundreds of thousands of people. Please explain to this dope that it was the 'incompetence of China', and nothing else, that did this mass Worldwide killing!" Trump said.

China has denied covering up the extent of its coronavirus outbreak and accused the US of attempting to divert public attention by insinuating that the virus originated from a virology laboratory in Wuhan.

"China was the first country to report the COVID-19 to the World Health Organisation (WHO), (and) that doesn't mean the virus originated from Wuhan... There has never been any concealment, and we'll never allow any concealment," Chinese Foreign Ministry spokesman Zhao Lijian said last month.

"A discerning person will understand at a glance that the purpose is to create confusion, divert public attention, and shirk their responsibility," he said.

The novel coronavirus which first originated in Wuhan in December last year has claimed 328,120 lives and infected nearly 5 million people globally. The Us is the worst affected country with 93,439 deaths and over 1.5 million infections, according to Johns Hopkins University data.

Meanwhile, the US Senate passed a bill boosting oversight of companies based in China and other nations that could lead to their removal from American stock exchanges.

The Holding Foreign Companies Accountable Act, proposes to increase oversight of Chinese and other foreign companies listed on American exchanges and delist and ban over-the-counter trading for firms that are out of compliance with US regulators for a period of three years.

In a related development, a group of top Republican Senators led by Marco Rubio sent a letter to Secretary of the Treasury Steven Mnuchin following disturbing reports that China's state-owned and-directed enterprises were looking to exploit the economic crisis by buying US and foreign companies.

As companies backed by the Chinese Communist Party (CCP) approach banks to identify the purchase of companies in the US and in Europe affected by the pandemic, the senators urged Mnuchin to protect against the China's and the CCP's predatory economic behaviour during the COVID-19 crisis.

"We write to express our concerns related to the People's Republic of China's (PRC) efforts to exploit the economic crisis wrought by the COVID-19 pandemic to gain control of distressed companies or shirking its international responsibilities amidst a worldwide crisis.

"In both Chinese Communist Party (CCP) and PRC policy documents, Beijing has made no secret of its intentions to dominate strategic industrial and emerging technology sectors as well as influence standards at the expense of liberal, rules-based governance," wrote the senators.

As the crisis reverberates across the globe, the PRC's predatory lending practices — including the use of non-disclosure agreements for bilateral loans — not only damage the fiscal situation of recipient countries but also undermine the international community's ability to respond effectively to the crisis, they said.

"Without US and international pressure for accountability and transparency, those countries that are in debt to the PRC will not have the political cover or protection to open their financial books. Such countries will face the risk of default or a currency crisis, leaving the International Monetary Fund (IMF), World Bank, and Western countries to clean up the PRC's mess," the senators said.

During a campaign round table Katrina Pierson, Senior Advisor to the Trump 2020 Campaign, said that only the US President will defeat the coronavirus, hold China accountable for their negligence, and defend the American people from socialism. 

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.

Seoul, Jun 16: North Korea blew up an inter-Korean liaison office on its side of the border on Tuesday, the South's Unification Ministry said, after days of increasingly virulent rhetoric from Pyongyang.

"North Korea blows up Kaesong Liaison Office at 14:49," the ministry, which handles inter-Korean relations, said in a one-line alert sent to reporters.

The statement came minutes after an explosion was heard and smoke seen rising from the long-shuttered joint industrial zone in Kaesong where the liaison office was located, Yonhap news agency reported citing unspecified sources.

Its destruction came after Kim Yo Jong, the powerful sister of North Korean leader Kim Jong Un, said at the weekend: "Before long, a tragic scene of the useless north-south joint liaison office completely collapsed would be seen."

Since early June, North Korea has issued a series of vitriolic condemnations of the South over activists sending anti-Pyongyang leaflets over the border -- something defectors do on a regular basis.

Last week it announced it was severing all official communication links with South Korea.

The leaflets -- usually attached to hot air balloons or floated in bottles -- criticise North Korean leader Kim Jong Un for human rights abuses and his nuclear ambitions.

Analysts say Pyongyang may be seeking to manufacture a crisis to increase pressure on Seoul while nuclear negotiations with Washington are at a standstill.

Earlier Tuesday, North Korea's army said it was "fully ready" to take action against the South, included re-entering areas that had been demilitarised under an inter-Korean agreement.

"North Korea is frustrated that the South has failed to offer an alternative plan to revive the US-North talks, let alone create a right atmosphere for the revival," said Cheong Seong-chang, a director of the Sejong Institute's Center for North Korean Studies.

"It has concluded the South has failed as a mediator in the process."