The top U.N. official in Afghanistan is cautioning against «simplistic» efforts to split the Taliban insurgency by buying off rank-and-file rebels while militarily confronting hardcore elements, AP reported. Special representative Kai Eide acknowledged on Tuesday that some Taliban fighters are motivated merely by financial reasons while others are irreconcilable. But he told the Security Council that many have joined the insurgency because they feel alienated from a weak, graft-ridden central government in Kabul.