Singh also underlined that enhancement of bilateral cooperation and economic relations with Pakistan was in the mutual interest of the two countries.
"Incidents like the barbaric killing of two Indian soldiers on the Line of Control in January 2013 vitiate the atmosphere and cast a shadow on the bilateral dialogue process," he said.
Singh was replying to a debate in the Lok Sabha on the Motion of Thanks to the President for his address to the joint sitting of both Houses of Parliament.
Observing that better relations were in mutual interest, Singh said, "We also expect Pakistan to take steps to create a conducive environment to take the process of normalisation forward."
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On relations with China, the Prime Minister said the new leadership had conveyed to him their desire to strengthen the strategic communications between them.
"The new leadership in China has conveyed to me their desire to strengthen our strategic communication and to forge a better future for our relations," Singh said.