Border tensions flared up at 4 different locations along the LAC. Face-off and stand-off situations occur along the LAC in areas where both India and China have overlapping claims. The LAC, however, has never been demarcated. There are differing perceptions in around 2 dozen spots across Ladakh, Himachal Pradesh, Uttarakhand, Sikkim and Arunachanal Pradesh. The border of the Sikkim sector is broadly agreed but is not delineated.