India has never been the aggressor, Rajnath Singh said. (File)

Defence Minister Rajnath Singh on Tuesday said India has never been the aggressor but its armed forces are capable of giving a befitting reply to those who cast an evil eye on it.

The Navy has maintained vigilance to ensure that 26/11 is not repeated, Mr Singh added while addressing the media at the Naval Commanders Conference. India, he said, has never been "offensive".

"It's character is such that it has not attacked any country nor conquered even an inch of land belonging to another nation. But the armed forces have the capability and strength to give a befitting reply to anyone who casts an evil eye on us," the minister said.

He was responding to a query on Pakistan's Railway Minister Sheikh Rashid Ahmed's reported statement that his country would retaliate against India with a nuclear attack for targeting Pakistani military posts in Jammu and Kashmir's Tangadhar sector.

According to Indian Army officials, there was unprovoked firing by Pakistan in the sector on the intervening night of Saturday and Sunday.

On Sunday, the Indian Army retaliated by launching heavy artillery attacks, targeting at least four terror camps and several Pakistani military positions opposite the Tangadhar sector along the Line of Control, the officials said.

On Prime Minister Narendra Modi's announcement on the CDS (Chief of Defence Staff), Mr Singh said it would also improve the overall coordination between the three services, a statement issued by the Defence Ministry said.

The three-day second edition of Naval Commanders' Conference began in New Delhi on Tuesday. It is the apex level biannual event for interaction between naval commanders for deliberation and formulation of important policy decisions.

On the Indian Navy, the defence minister said that after visiting naval ships, submarines and establishments, including IMAC (Information Management and Analysis Centre), and having witnessed a wide range of naval operations at sea, he is confident that the Navy will continue to perform the duty of safeguarding the maritime interests of the nation.

Mr Singh also said that global terrorism continues to be a challenge for all security forces and that sea routes have their own vulnerability.

He urged the naval commanders to continue reviewing procedures and strengthen the coastal security framework to counter emerging threats and challenges effectively.

"Post the 26/11 Mumbai terror attacks, the Navy has made concerted efforts to strengthen security and stability of our waters and coastal regions, and enhance inter-agency cooperation and coordination.

"Our Indian Navy's resolve is that 26/11 will not be repeated under any circumstances and it has ensured tight vigil," he said, referring to the November 2008 terror siege of Mumbai.

A strong Navy remains a necessary guarantor of India's security and prosperity, and therefore the need for a modern, potent and credible Navy cannot be over-emphasised, Mr Singh said.

For the Indian economy to reach the USD 5 trillion mark by 2025 there is a requirement for a stable and balanced environment in which Navy has a crucial role to play in the form of safeguarding the Sea Lines of Communication (SLOC), which are the economic lifeline, he observed.

In this context, he highlighted the swift and calibrated manner in which the Navy launched ''Operation Sankalp'' in wake of the incidents involving attacks on oil tankers in the Gulf of Oman in May and June this year.

Escorting Indian flagged merchant vessels through this energy lifeline of the country during Operation Sankalp, the Navy has emphatically reiterated its ability to defend India's critical national interests, he said.

Mr Singh said the Indian Navy has also established itself as a vital tool for military diplomacy.