The United States signed the CTBT in 1996 but has not ratified it. Ratification requires Senate approval, which has not been granted.

The International Day for the Elimination of Racial Discrimination is observed every year on 21 March. This date commemorates the Sharpeville massacre in South Africa in 1960, when police killed 69 people at a peaceful protest against apartheid. The United Nations General Assembly proclaimed the day in 1966, urging the international community to intensify efforts to eliminate all forms of racial discrimination.

The Pacific Ocean reaches its greatest depth in the Mariana Trench—about 10,920 meters below sea level—making it the deepest of the world’s oceans and covering more than 63 million square miles.

“Viva voce” is Latin for “with the living voice,” commonly understood to mean “by word of mouth” and used to describe oral examinations or testimony 1.

The Nagorno-Karabakh region has been contested by Armenia and Azerbaijan, with periodic flare-ups despite ceasefires.

NASA, in partnership with ESA and CSA, launched JWST on 25 December 2021 from French Guiana and began science operations in 2022.

Magdalena Andersson, leader of the Social Democrats, was appointed Sweden’s first female prime minister on 30 November 2021 and continued in 2022.

Olaf Scholz, leader of the Social Democratic Party, was sworn in on 8 December 2021 as Germany’s ninth chancellor.

Indonesia took over the G20 Presidency on 1 December 2021, steering the group’s agenda through the end of 2022.

China’s third carrier, the Fujian, completed fitting out and trials in 2023 after its launch in June 2022.[16](https://testbook.com/question-answer/which-country-has-launched-its-third-aircraft-carr--62af09e6ac3e4354e65718a4)