"Paristhitiyaan kitni bhi pratikul kyon naa ho, hum Bharat ka mastak kisi bhi surat mein jhukne nahi denge (Under no circumstances, however adverse they may be, we will never let India down)," he said.
Singh, on the last day of his three-day visit to Uttar Pradesh, was speaking at a public meeting here, but did not name Pakistan.
The home minister said, "...Bharat ab kamzor desh nahi rah gaya, vishwa samudaay ki Bharat ke prati dharna badal chuki hai (India is no longer a weak nation. It has become a strong nation and its image before the world has changed."
His remarks came almost a month after a group of five Army commandos crossed the Line of Control (LoC) in Poonch sector of Jammu and Kashmir and killed three Pakistani soldiers and smashed a post, in a swift and daring operation to avenge the killing of four Indian Army personnel by a Border Action Team of the Pakistan Army in Keri sector in Rajouri district.
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In the same refrain, he said today that India had given a bold message to the world community that any insult to the country would not be tolerated.
In the latest ceasefire violation, Pakistani troops opened fire and lobbed mortars at Indian positions along the International Border and the LoC in three sectors of Jammu and Rajouri districts overnight, raising the death toll in the ceasefire violations since Thursday last to 12.
Singh, who represents the Lucknow constituency in the Lok Sabha, today inspected work on under-construction Outer Ring Road which will link the state capital with Barabanki.