The build-up of the Nationl Security Adviser (NSA)-level talks between Indian and Pakistan was like "never before", Jammu and Kashmir's former chief minister Omar Abdullah said on Saturday."This #NSAtalks buildup has been like no other I've seen before," he tweeted.The talks seem to be in a jeopardy after Pakistan on Friday rejected India's "advice" of not holding talks with Jammu and Kashmir's separatist leaders. The two NSAs are scheduled to hold talks on August 23-24 in New Delhi.