From daily The Guardian in Britain today:
Plane crash that killed UN boss ‘may have been caused by aircraft attack’
Exclusive: US and UK intercepts could hold answer to 1961 accident in Africa that killed Dag Hammarskjöld and 15 others
On 18 September 1961, Dag Hammarskjöld, Swedish Secretary-General of the United Nations, died in what was then the British colony Northern Rhodesia (now: Zambia). His plane crashed, killing all people on board either immediately, or a few hours, or a few days later.
An accident? Murder? Views on this differ sharply. Wikipedia notes that official investigations and search and rescue in Northern Rhodesia after the plane crashed were iffy.
Who might have had a motive for killing the United Nations Secretary-General; and, if so, what motive? Dag Hammarskjöld at the time of his death was trying to find a solution for the war in Congo. In 1960, Congo became officially independent from Belgium. However, Belgian big business, establishment politicians and “intelligence” services wanted to basically carry on ruling Congo, now from behind the scenes: from colonialism to neo-colonialism. The democratically elected prime minister of Congo, Patrice Lumumba, opposed that. This led to war in Congo. In 1961, Lumumba was murdered; with complicity of the Belgian secret service and the CIA, later research says.
After the news of Hammarskjöld’s death, a press release issued by the Prime Minister of the Republic of the Congo stated that, “… in order to pay a tribute to this great man, now vanished from the scene, and to his colleagues, all of whom have fallen victim to the shameless intrigues of the great financial Powers of the West… the Government has decided to proclaim Tuesday, 19 September 1961, a day of national mourning.”
So, the government of Congo suspected murder by Western
spying … sorry, I am supposed to use euphemisms … intelligence services.
His [Hammarskjöld’s] efforts towards the decolonisation of Africa were considered insufficient by the Soviet Union …
However, hardline pro-colonialists in Belgium, Britain and other NATO countries rather thought Hammarskjöld did too much for decolonisation.
United States President John F. Kennedy called Hammarskjöld “the greatest statesman of our century”. Not everyone in the United States government may have agreed with that view.
On 19 August 1998, Archbishop Desmond Tutu, chairman of South Africa’s Truth and Reconciliation Commission (TRC), stated that recently uncovered letters had implicated the British MI5, the American CIA, and then South African intelligence services in the crash of Hammarskjöld’s plane.
See also here.