Gro Harlem Brundtland, former Prime Minister of Norway and Chair of the UN commission that brought the concept of sustainable development to global attention 25 years ago, said:

“The Rio+20 declaration does not do enough to set humanity on a sustainable path, decades after it was agreed that this is essential for both people and the planet. I understand the frustration in Rio today.

“We can no longer assume that our collective actions will not trigger tipping points, as environmental thresholds are breached, risking irreversible damage to both ecosystems and human communities. These are the facts – but they have been lost in the final document.

“Also regrettable is the omission of reproductive rights – which is a step backwards from previous agreements. However – with this imperfect text, we have to move forward. There is no alternative. The most important message as we leave Rio is that the collective task of making the three pillars of sustainable development a reality must continue – and we don’t have any time to lose.”

Mary Robinson, former President of Ireland and former UN High Commissioner for Human Rights, said:

“This is a ‘once in a generation’ moment when the world needs vision, commitment and above all, leadership. Sadly, the current document is a failure of leadership. It sets some processes in train and we will have to work with them, but we should also expect and encourage new constituencies to emerge, demanding new thinking and change from the grassroots to the top.

“I had also hoped for greater progress on creating institutions to hold governments accountable – such as a Sustainable Development Council – or a new mechanism to represent the interests of young people and future generations at the UN.

“The challenge now is to mobilise a wider community of civil society, trade unions, business and other major groups represented at the UN to create the pressure needed for a new paradigm of sustainable development.”

Fernando Henrique Cardoso, former President of Brazil, said:

“I am concerned that the final declaration does not give the same weight to environmental protection as it does to human development and growth. This old division between environment and development is not the way we are going to solve the problems that we are creating for our grandchildren and great-grandchildren.

“We have to accept that the solutions to poverty and inequality lie in sustainable growth, not growth at all costs. The challenge is to move our governments and institutions towards this kind of thinking.

“What is even more important than the Rio+20 Declaration is the mobilisation of people around this issue. Let us continue to demand more from our governments, and work to get effective international mechanisms to monitor progress on sustainability. Civil society must keep pushing for these changes – governments need it.”