A blast at an army base in eastern Afghanistan kills at least two soldiers and two civilians.
Afghan and Pakistani soldiers clash at the Torkham border crossing between the two countries, leaving one Afghan soldier and a Pakistani major killed. At least 22 other people were also injured. Tensions between Afghanistan and Pakistan have grown since the latter's attempts to build a gate at the crossing.
More than 200 Afghan militants cross over into Pakistan and attack a security checkpoint in northwest Pakistan, sparking a clash in which 28 Pakistani security forces and six civilians die, along with 45 Afghans.