Stock decline to 24-yr low in London wipes out $15-billion value in early trade IDRs slump 20%
Higher opening in equity mkt buoyed by Chidambaram's promise of bringing economy back on track, supported rupee
Erased initial gains on fresh demand for the American currency from banks and importers
As dispute gets political edge, Sands says the unusual method of announcement was a surprise Bank of England criticises US agency
But lack of big-ticket deals and policy issues worry Louis Vuitton arm