British Prime Minister David Cameron called on Afghanistan and Pakistan on Thursday to make common cause against insurgents in the two countries' border zone. He spoke in Kabul in a visit aimed at adding British weight to American diplomatic attempts to get Pakistan to become more cooperative in ending the Afghan war.

Cross-border fighting and stalled negotiations with the Taliban were the main topics of discussion at a three-way meeting between Pakistani Prime Minister Raja Pervaiz Ashraf, Afghan President Hamid Karzai and Cameron.

The British, U.S. and Afghan governments have long criticized Pakistan for not doing enough to stop cross-border attacks. Many insurgents groups are based in safe havens in Pakistan's lawless tribal areas along the Afghan border. Islamabad also charges that insurgents cross the border from the Afghan side and attack Pakistani security forces.

"The terrorists that are trying to wreck Afghanistan are by and large the same terrorists that are trying to wreck Pakistan," Cameron said. "We should be together in one single fight."