Expecting global banks to weather the current turmoil, RBI Governor Raghuram Rajan has asked them to keep the Indian central bank informed about any liquidity drain from their operations in India. Addressing a banking conference organised by CII in Mumbai Thursday, Dr Rajan said at this point he does not see prima facie a case to start getting overtly worried about the health of global banks. He added that the heightened capital requirements enforced after the 2008 financial meltdown will also be a source of help.