The logo of the BTA bank is seen on the top of its office in Almaty February 2, 2009. Kazakhstan effectively nationalised its top bank BTA and sacked an ex-opposition leader as its key manager on Monday as a deepening financial crisis acquired political undertones in Central Asia's biggest economy. REUTERS/Shamil Zhumatov (KAZAKHSTAN)   ASTANA, Oct 1 (Reuters) – Kazakh state-run bank BTA <BTAS.KZ> has until December 7 to finalise its $10 billion debt restructuring deal, the banking regulator said on Thursday. (more…)