KABUL/ KARACHI, Feb 24 (Reuters) - Pakistani and Afghan forces exchanged fire along their border on Tuesday, with each side accusing the other of initiating the clash, days after Pakistani airstrikes in Afghanistan strained already tenuous ties.
The incident marks the latest flare-up along the 2,600-km (1,615-mile) border, where tensions have risen since Pakistan's strikes on Saturday and Sunday and threaten a fragile ceasefire following deadly clashes in October.
