Party's senior spokesperson Anand Sharma said the prime minister should also take the leaders of principal opposition parties into confidence on the issue soon.
"It is worrying. This has been a disturbing development. It is important that the past agreements on maintaining peace and tranquility are respected by China and both the countries work to de-escalate the tension on the borders," he said.
Sharma said the present stand-off is in the trilateral junction between India, Bhutan and China and the positions are well-known and it is thus important that the status quo ante is restored, where the position as it was before the 16th (from the Chinese side).
"We hope that when prime minister goes for the G-20 Summit, he takes this up with the Chinese President and utilises the forum and the opportunity of the meeting to meaningfully address this issue. We will wait to hear from the government," he said.
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Sharma also said that "it is important given the nature of the escalation that the prime minister, whom we have been urging for sometime now, takes the national leadership of principal opposition parties into confidence about the situation on the borders and how the government proposes to deal with it."
"The situation on the India China border is alarming. I hope that the Government is doing everything to contain it," she said, adding that the Congress stood by the Army on the issue of National security.
"We have always stood by the army in matters of national security," she said.