Glencore (Wikipedia)

Controversial involvements
According to an Australian public radio report, "Glencore's history reads like a spy novel".[3] The company was founded as Marc Rich & Co. AG in 1974 by billionaire commodity trader Marc Rich, who was charged with tax evasion and illegal business dealings with Iran in the U.S., but pardoned by President Bill Clinton in 2001. In 1993 and 1994, Rich sold all of his majority share in Marc Rich & Co. AG back to the company.[4] The enterprise, renamed Glencore, is now owned and run by his former associates, including former Glencore CEO Willy Strothotte and present CEO Ivan Glasenberg.

Dealings with rogue states
ABC Radio also reported that Glencore "has been accused of illegal dealings with rogue states: apartheid South Africa, Communist Russia, Iran, and Iraq under Saddam Hussein", and has a "history of busting UN embargoes to profit from corrupt or despotic regimes". [3] Specifically, Glencore was reported to have been named by the CIA to have paid USD 3,222,780 in illegal kickbacks to obtain oil in the course of the UN oil-for-food programme for Iraq. The company denied these charges, according to the CIA report quoted by ABC.[3][2]

Investments in Colombia
Moreover, Swiss public television (TSR) reported in 2006 that allegations of corruption and severe human rights violations were being raised against Glencore on account of the alleged conduct of its Colombian Cerrejón mining subsidiary. Local union president Francisco Ramirez was reported to have accused Cerrejón of forced expropriations and evacuations of entire villages in order to enable mine expansion, in complicity with Colombian authorities. According to TSR, a representative of the local Wayuu Indians also accused Colombian paramilitary and military units, including those charged with Cerrejón mining security, of forcibly driving the Wayuu off their land, in what she described as a "massacre".[5]

More: http://en.wikipedia.org/wiki/Glencore_International