*Dialogue writing on the futility(uselessness) of war
between an Indian and a Chinese soldier.
Answers
At least 20 Indian soldiers were killed in Monday night's incident. It happened in Galwan Valley in the disputed Ladakh region.
China accused Indian troops of crossing the border twice, "provoking and attacking Chinese personnel".
Both sides insisted that no shots were fired. Indian officials gave accounts of fighting with bare hands, iron rods and stones.
There were reports of Chinese casualties, but no official confirmation.
Military officials from both countries later met to "defuse the situation", the Indian army said.
Why are they fighting?
The military superpowers have been arguing for decades over territory in the high-altitude, largely uninhabited region.
Their armies come face to face at many points along the 3,440km (2,100-mile) shared border.
The confrontation came after tensions bubbled up in recent months over a new road India built in Ladakh, along the Line of Actual Control which divides the sides.
That angered China, which deployed troops and built infrastructure of its own in disputed territory, bringing the two sides' forces in closer proximity and heightening the risk of clashes.
Why does it matter?
Both sides see the area as strategically important, economically and militarily.
If neither gives way, the stand-off could have destabilising consequences for the region