The pair were due to take part in a one-day leadership summit in Johannesburg, South Africa on Thursday.
BBC: Archbishop Tutu refuses platform with Tony Blair over Iraq
In August, he pulled out of a leadership summit in Johannesburg because he refused to share a platform with former UK Prime Minister Tony Blair.
After the leadership summit, two student groups demonstrated in Andhra Pradesh.
On the same day, Irina Bokova gave the keynote address, opening the 7th Annual Blouin Creative Leadership Summit, held at the Metropolitan Club in New York.
Dr Tutu, who was awarded the Nobel Peace Prize in 1984 in recognition of his campaign against apartheid, and Mr Blair were due to appear at the Discovery Invest Leadership Summit.
BBC: Archbishop Tutu refuses platform with Tony Blair over Iraq
At the United Nations Global Youth Leadership Summit, which took place in New York in October of last year, Da Gama invited black celebrities to come to Africa to be the face of malaria.
MIAMI, Florida and BARCELONA, Spain - Feb. 27, 2012 - At the IAB Annual Leadership Summit and Mobile World Congress, Adobe Systems Incorporated (Nasdaq: ADBE) today unveiled the industry's first fully integrated video technology platform, code named Project Primetime, to enable smooth, TV-like experiences for ad-supported videos across Web-connected devices.
In addition to more established groups like the Leadership Summit (led by Frank Carbajal), and Hispanic-Net (led by Michael Lopez and Margarita Quihuis), we now have emerging groups like LAM (Giovanni Dubois), Silicon Valley Latino (Alex Ontivero, Jose Posadas, and Sergio Domeyko), and the Latino Startup Alliance (Jesse Martinez).
In 2005 it hosted the first World Cities Leadership Climate Change Summit, a meeting which paved the way for the creation of the C40 -- a group of large cities committed to tackling climate change that includes members as diverse as New York, Buenos Aires, Istanbul, Johannesburg and Jakarta.
Since the four dominant powers of America, Canada, Europe and Japan (the so-called Quad) failed to show leadership at the trade summit in Seattle in late 1999, Mr Stern wants to see a new group of developing economies blaze a trail in multilateral issues.
The Russian leadership has been pushing for a summit, and with recent legislative battles over Kiriyenko and economic reform, including an austerity budget, ratifying START II is unlikely anytime soon.
And I think the results of this NATO Summit are reflective of his extraordinary leadership.
An emergency G-7 meeting that has the effect of supplanting Japanese leadership of the Group of Seven prior to the Tokyo summit and that will likely be used as a forum for demanding that Japan abandon its position on the Northern Territories will serve neither the long-term interests of the Russian people nor those of the industrialized world.
And that's always been the objective of the Nuclear Security Summit, and I think that because of the fine leadership that's been shown by President Lee and his delegation, we're going to see a whole bunch of concrete stuff get done over the next two days.
WHITEHOUSE: President Obama and President Lee Hold a News Conference
By properly resisting misguided pressures from its Western allies, Tokyo has more than earned a leadership position on this key agenda item going into the July London Economic Summit.
President Obama did attempt to give global leadership on the climate issue, by attending the UN's Copenhagen climate summit in 2009.
Thank you for your tremendous leadership, and that of Indonesia, as you host both ASEAN and the East Asia Summit.
Former government chief scientific adviser, Sir David King, said the summit had come one year too early for Mr Obama to be able to take leadership of the issue.
At the Group of 20 (G-20) Summit in Cannes, on 3 and 4 November, the Secretary-General urged the G-20 leaders to deliver united leadership to address the urgent problems of the world economy, and welcomed the efforts at the Cannes Summit in this regard.
And they do so at a time when Fatah's leadership refuses to have anything to do with the Israeli government and as Fatah leader Mahmoud Abbas is preparing for his summit with Hamas leader Ismail Haniyeh.
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