Washington: Expressing disappointment over the cancellation of NSA-level talks between India and Pakistan, the US has said it would just encourage the two countries to resume a formal dialogue soon.

"We were encouraged by the early constructive interaction between the leaders of India and Pakistan earlier this year," in Russia, State Department spokesman John Kirby told reporters Monday. "We're disappointed that the talks didn't happen," he said. "We just encourage India and Pakistan to resume a formal dialogue soon."