The Beijing embassy in Washington said in a Twitter message that the boycott "only seeks to politicize sport, create divisions and provoke confrontation."
The US Government's decision will not impact the country's athletes, who normally participate in the sporting event held in the Chinese location of Beijing.
Secretary of State Antony Blinken said that NATO is prepared to impose severe costs on Moscow in the event of an attempted invasion.
The alleged shooter, a 15-year-old student at the school, was quickly detained by police without resisting, after firing 15 to 20 shots with a semi-automatic pistol.
WHO today warned of the high risk of infections with Ômicron. US President Joe Biden admitted that the variant is a concern, but ruled out a new lockdown in the country.