At the end of the 1980s, Estonians perceived their demographic change as a national catastrophe. This was a result of the migration policies essential to the Soviet Nationalisation Programme aiming to russify Estonia administrative and military immigration of non-Estonians from the USSR coupled with the deportation of Estonians to the USSR. In the decade following the reconstitution of independence, large-scale emigration by ethnic Russians and the removal of the Russian military bases in 1994 caused the proportion of ethnic Estonians in Estonia to increase from 61% to 69% in 2006.
How did Estonians view the demographic change of less ethnic Estonians?
a national catastrophe

Improved sanitation in the developing world is a global need, but a neglected priority as shown by the data collected by the Joint Monitoring Programme for Water Supply and Sanitation (JMP) of UNICEF and WHO. This program is tasked to monitor progress towards the Millennium Development Goal (MDG) relating to drinking water and sanitation. About one billion people have no sanitation facility whatsoever and continue to defecate in gutters, behind bushes or in open water bodies, with no dignity or privacy - which is called open defecation and which poses significant health risks. India is the country with the highest number of people practicing open defecation: around 600 million people. India has also become a focus country for the foundation's sanitation activities which has become evident since the "Reinvent the Toilet Fair" in Delhi, India in March 2014.
What country is the worst violator
India is the country with the highest number of people practicing open defecation: around 600 million people

After the Voyager 2 flyby mission, the next step in scientific exploration of the Neptunian system, is considered to be a Flagship orbital mission. Such a hypothetical mission is envisioned to be possible at in the late 2020s or early 2030s. However, there have been a couple of discussions to launch Neptune missions sooner. In 2003, there was a proposal in NASA's "Vision Missions Studies" for a "Neptune Orbiter with Probes" mission that does Cassini-level science. Another, more recent proposal was for Argo, a flyby spacecraft to be launched in 2019, that would visit Jupiter, Saturn, Neptune, and a Kuiper belt object. The focus would be on Neptune and its largest moon Triton to be investigated around 2029. The proposed New Horizons 2 mission (which was later scrapped) might also have done a close flyby of the Neptunian system.
When can we expect Argo to visit Triton?
2029