Singapore, May 31 -- Defence secretary Rajesh Kumar Singh on Saturday said that India had already signed a BrahMos missile deal with Vietnam, while a similar pact with Indonesia was in the final stages. "My understanding is that with both Indonesia and with Vietnam, the deal is in the final stages...for Vietnam, I understand that it has already been signed, probably not publicly announced," Singh said at the Shangri-La Dialogue in Singapore.P6...