Addressing a public meeting organised by the Bharatiya Janata Party in this Telangana town to mark 'Telangana Liberation Day', the Minister claimed that situation on the border had changed and that India is no longer a weak country.
Stating that India is giving a befitting reply to the terror, he said this had no parallel in the country's history.
Rajnath Singh vowed to root out the problems of terrorism, extremism and Maoism.
He said India had emerged as a powerful country and no power can cast an evil eye on it or threaten its sovereignty.
The Home Minister said the 13 month period from August 15, 1947 to September 17, 1948 was a dark chapter in India's history as the ruler of Hyderabad State committed repression on people, who want to merge with India.
He paid his tributes to India's first Home Minister Sardar Vallabhbhai Patel for launching 'police action' to force Nizam to merge Hyderabad State with the Indian Union.
He said the credit of political unification of India goes to Patel who ensured merger of all states with the Indian Union.