However, the main negotiations that resulted in the agreement did not take place at all at the peace conference, but took place during secret negotiations between Kissinger and Lê Đức Thọ, which began on August 4, 1969. O2 Consulting has extensive expertise in national and international tax matters and also has remarkable strength in tax structure mandates and tax aspects of M&A transactions. Co-leaders Natalya Kuznetsova and Tatyana Safonova are key figures alongside Managing Partner Olga Sorokina. The team expanded its expertise in the taxation of financial and derivative transactions after Safonova was recruited from an internal role in 2019. The BRICS agreed to set up a common mechanism for equity investment in infrastructure projects.