Pakistan's foreign ministry says India's new nuclear-powered submarine is "detrimental" to peace and stability in the region.
In a statement, a spokesman for the Pakistani foreign office (Abdul Basit) says
Pakistan will take "appropriate steps" to safeguard its own security,
but will do so without entering into an arms race with India.
He said Pakistan believes maintaining strategic balance is essential for peace and security in South Asia.
The Indian submarine, called the Arihant, or "Destroyer of Enemies,"
set out for sea trials on Sunday. It is the first of five submarines
New Delhi plans to build.
Indian Prime Minister Manmohan Singh said the project is important for India's security and does not seek to threaten anyone.
Once in service, the 6,000-ton Arihant will be capable of firing ballistic missiles with nuclear warheads.
Relations between India and Pakistan were severely strained after last
year's terrorist attacks in Mumbai, which India blames on
Pakistani-based militants. The incident halted the slow-moving peace
process between the two nuclear-armed neighbors.