said: "[Our dad] was there for us — he was the one out of two left, and he tried to do his best and to make sure that we were protected and looked after." Speaking about his grandmother, William stated: "At the time, my grandmother wanted to protect her two grandsons and my father as well. Our grandmother deliberately removed the newspapers and things like that so there was nothing in the house to read." Diana's sister, Lady Sarah McCorquodale, also spoke in defence of the Queen's decision: "She did absolutely the right thing. If I'd been her, I'd have done that." Politicians British Prime Minister Tony Blair said that he was "utterly devastated by the death of the Princess". US President Bill Clinton said that he and his wife, Hillary Clinton, were "profoundly saddened" when they found out about her death. Kofi Annan, the United Nations Secretary-General said that her death "has robbed the world of a consistent and committed voice for the improvement of the lives of suffering children worldwide". In a telegram of condolences, German Chancellor Helmut Kohl expressed the view that Diana had also become the victim of an "increasingly brutal and unscrupulous competition on the part of some of the media." In Australia, the Deputy Prime Minister, Tim Fischer, condemned the paparazzi for their overzealous coverage of Diana. Russian President Boris Yeltsin praised Diana's charity work in a statement saying, "All know of Princess Diana's big contribution to charitable work, and not only in Great Britain". Among other politicians who sent messages of condolences were Australian Prime Minister John Howard, South African President Nelson Mandela, Canadian Prime Minister Jean Chrétien, New Zealand Prime Minister Jim Bolger, and Israeli Prime Minister Benjamin Netanyahu. The Australian House of Representatives and the New Zealand House of Representatives also passed parliamentary motions of condolence. The Government of Canada, as well as individual provinces in the country, set up online and in-person books of condolences in their parliament buildings and memorial services were held across the country. Following her death, delegates at an international conference in Oslo to ban landmines paid their tributes to Diana, who was an avid campaigner for banning the explosive devices. The Ottawa Treaty, which created an international ban on the use of anti-personnel landmines, was adopted in Oslo, in September 1997 and signed by 122 States in Ottawa on 3 December 1997. Diana's work on