On which of the following days is United Nations Russian Language Day observed every year?

Who launched the recently discussed ‘Operation Milap’, under which separated individuals were reunited with their families? 

The ATL Bridge agreement has been signed between India and which country to promote cross-border innovation and student exchange programs?

Which of the following has adopted the first global treaty setting international employment standards for gig and platform workers?

The biennial SAREX Military Exercise was conducted between South Korea and which country?