In August 1962 Secretary General Thant drew up a "Plan for National Reconciliation" by which Katanga would rejoin a federalized Congo. Adoula and Tshombe both accepted the proposal. Thant was wary of Tshombe's delaying tactics and applied increasing political pressure on the Katangan government to abide by the plan's timetable. Still doubting the likelihood of a peaceful resolution of the Katangan secession, he sent Ralph Bunche to Léopoldville. There, Bunch worked with local UN Mission Chief Robert Gardiner and UN Force Commander Sean MacEoin to create a plan to achieve freedom of movement for ONUC personnel and eliminate the foreign mercenaries. By then it was obvious that Tshombe did not intend on rejoining the Congo; there were 300–500 mercenaries in Katanga (as many as there had been before previous UN operations) and new airfields and defensive positions were being constructed. ONUC personnel and even consuls from troop-contributing supporters of ONUC faced increasing harassment at the hands of Katangan forces.