Pakistan, Oct. 13 -- China has expressed deep concern over recent deadly border clashes between Pakistan and Afghanistan. The violence began late Saturday and continued into Sunday morning. Pakistan's military reported that 23 of its troops were killed in the fighting. In retaliation, Pakistani forces claimed to have killed 200 militants linked to the Afghan Taliban. Tensions remain high along the volatile border.

Afghanistan, however, said its attack was in response to airstrikes it claims Islamabad carried out earlier in the week. Pakistan has not confirmed those strikes but accuses Kabul of allowing the Tehreek-i-Taliban Pakistan (TTP) to operate from its soil. Afghanistan denies harboring militants and blames Pakistan for violating i...