Separate thread while this is hot.

NEW DELHI (Reuters) - India's diplomatic efforts to end a seven-week military standoff with China have hit a roadblock, people briefed on the talks said, prompting Chinese state-run media to trumpet rhetoric of "unavoidable countermeasures" on the unmarked border.

China has insisted that India unilaterally withdraw its troops from the remote Doklam plateau claimed by both Beijing and Indian ally Bhutan.

But China did not respond to India's suggestion in the talks that it move its troops back 250 meters (820 ft) in return, said one source with close ties to Prime Minister Narendra Modi's government.

In the low-key diplomatic maneuvers that took place outside the public eye, the Chinese countered with an offer to move back 100 meters (328 ft), so long as they received clearance from top government officials.

But there has been no comeback since, except for China's mounting warnings of an escalation in the region, which it calls Donglang.