Addressing the UN general assembly, Swaraj asked Pakistan's leaders to introspect as to why India is recognised as a global IT superpower while Pakistan is infamous as the "pre-eminent export factory for terror".
"Her (Swaraj's) measured responses in spite of provocations speak volumes of her maturity and tenacity. She has exposed Pakistan's duplicity on terrorism," he said in a tweet.
"Congratulations to Smt. @SushmaSwaraj on her powerful, measured and nuanced articulation of India's stand on the issue of terrorism at #UNGA (sic)," Singh said in another tweet.
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