Senior Bharatiya Janata Party leader Jaswant Singh said on Thursday that mistakes in understanding and management of border issues resulted in the 1962 Sino-Indian war and later territorial disputes with Pakistan. Errors in domestic policy matters would be corrected in a lifetime but mistakes with regard to foreign policy issues would take generations to be corrected, he said delivering a lecture on “borders and national security” in memory of K. Subrahmanyam at the National Institute of Advanced Studies (NIAS) here.