Tibetans and Tibet Support groups have hailed BP's decision to divest its stake in PetroChina which has been the target of a campaign by the Tibetans and activists since it became PetroChina's largest foreign shareholder after the company's initial public offering in 2000. "BP's decision to back out of PetroChina is long overdue," said Lhadon Tethong, Executive Director of Student for a Free Tibet. Bhuchung Tsering also expressed a similar view on BP's back out from PetroChina.