11.   Overnight, troops exchanged gunfire with North Koreans in at least two places, according to Yonhap TV, the state-owned national cable service.

12.   After a while, several Israeli and Palestinian troops exchanged punches.

13.   After some time, several Israeli and Palestinian troops exchanged punches.

14.   But for now, he said, Indian and Pakistani troops still regularly exchange fire across the border.

15.   But during the operation, the Western troops exchanged gunfire with two attackers shooting assault rifles.

16.   Earlier Monday, Israeli troops exchanged fire with armed Palestinians holed up in the church.

17.   Eritrean and Ethiopian troops exchanged artillery fire across their disputed border, a government official said Thursday.

18.   In a separate incident, the state-run Tanjug news agency cited an army statement that the border troops exchanged fire with arms smugglers crossing over from Albania.

19.   In the Bureij camp, Israeli troops exchanged fire with Palestinian security forces, and a Palestinian civilian was killed, doctors said.

20.   Indian and Pakistani troops have been exchanging artillery and machine-gun fire in Kashmir, which is claimed by both nuclear-capable countries.