India and the United States are beginning what is believed to be their biggest-ever joint naval exercise.
Known as Malabar 2003, it involves warships and thousands of naval personnel in manoeuvres expected to last five days off India's southern coast.
Similar exercises were conducted on three occasions in the 1990s but were suspended by the Americans after India tested nuclear weapons in 1998.
However, Washington renewed military contacts following the 11 September attacks when India joined President George W Bush's campaign against international terrorism.
From the newsroom of the BBC World Service