Pakistani Militant Groups Unite Against NATO.

Islamabad – A cease-fire was pledged to Pakistani security forces from Pakistani fighters on Sunday, but is also joining forces with the Taliban to attack NATO forces in Afghanistan.

Security experts say the agreement, which reunites four major militant factions under the under Taliban chief Mullah Mohammed Omar, was “a dual-purpose tactical move by the Taliban, which has lost hundreds of fighters during a two-year surge of U.S. forces in its Afghanistan strongholds.”

The deal between the groups also swells the Taliban's ranks and allows them the ability to launch more attacks into Afghanistan.

The unification between the groups, which will stop the occasional fighting between them, is very likely to serve the goals of the militants in the long-run.

Fata Research Center's director of research Mansur Mahsud said of the deal "It will take a lot of pressure off the militants, and deepen the tensions between the U.S. and Pakistan. There will be angry complaints by the Americans, and counter-accusations by Pakistan that NATO isn't stopping raids by Pakistani insurgents from Afghan territory."

Update: It should be noted this is happening against the backdrop of the Taliban opening an political office in the country of Qatar.