______ 2 countries exchanged the list of Nuclear Installations on Jan 01, 2020 ?

1) India and Pakistan
2) Pakistan and China
3) China and Russia
4) India and Sri Lanka

On January 01, 2020 India and Pakistan exchanged lists of nuclear installations. The 2 countries have agreed to not be targeted incase of hostilities in continuation of the 3 decade old tradition. The exchanges were shared through diplomatic channels simultaneously at New Delhi and Islamabad (Pakistan).