By Rahim Faiez and Kay Johnson for AP:

KABUL, Afghanistan – An Afghan soldier attacked his coalition allies with a rocket-propelled grenade and other weapons early Tuesday, killing three British troops and wounding four more before fleeing, officials said.

Please be sure to take any blood-pressure medication before continuing reading the story.

British Prime Minister David Cameron condemned the killings as "appalling" but insisted the incident should not change the strategy of working alongside the Afghan army.

Officials said the motive of the attack was unclear.

It was the second time in eight months that an Afghan turned against British troops partnering with local security forces. In November, an Afghan policeman killed five British soldiers at a checkpoint — also in southern Helmand province, where Tuesday's attack happened.

Afghan police in the past have also attacked American soldiers and their own police stations. While such intentional attacks are rare, they emphasize the difficulties in rapidly expanding the Afghan forces to take over responsibility for security from international troops.

Define "rare."  I'd say these attacks are relatively common.  I'd say they happen all too frequently.  And that's not even counting the cases of civilian Afghans working on the base who provide intelligence to the jihadis, or Afghan soldiers who pass on forewarning of U.S. patrols to the jihadis.  "Rare"?  How many cases of OTHER nations' soldiers attacking and killing our soldiers have there been?  I don't recall ANY cases of Japanese soldiers killing U.S. soldiers stationed in Japan.  Or German soldiers killing U.S. soldiers stationed in Germany.  "Rare"?  Have we reached the point that if jihadi attacks in a particular region don't occur on a daily basis, that is considered acceptable?

Critics have said a rushed schedule — aimed at allowing U.S. forces to begin drawing down by next year — makes it difficult to screen out insurgent sympathizers and also to properly train up Afghan forces in military discipline.

Yes, it's always about the kuffar and their crazy schedules.  Eight years and we still cannot train a passable Afghan army or police force.  EIGHT YEARS is considered "rushed".  Perhaps the "delay" has to do with the fact that the Afghan people share the same Islamic goals as the Taliban, and they are not interested in working with the kuffar U.S. soldiers who are interfering with the full and immediate implementation of sharia law.

[...]

Britain's Ministry of Defense said the soldiers from 1st Battalion Royal Gurkha Rifles died in a "suspected premeditated attack" by an Afghan soldier "using a combination of weapons." They were serving at a base in Helmand's Nahr-i-Saraj district.

The renegade Afghan soldier used a shoulder-mounted launcher to fire a grenade at British soldiers inside a base control room at around 2 a.m., Afghan Defense Ministry spokesman Gen. Mohammad Zaher Azimi said.

The soldier escaped and is being sought, he said, adding that the motive of the attack was not yet clear. A joint coalition-Afghan team is investigating.

As in the case of the Fort Hood jihadi Nidal Malik Hasan, he could have written a well-researched presentation that clearly explained why Muslims serving in the military have a religious obligation to fight and kill their fellow non-Muslim soldiers, he could have shouted "Allahu Akbar!" as he was firing and killing, and STILL his motive would have been unclear to the kuffar.

[...]

Previous turncoat attacks include a policeman who threw a grenade and opened fire on a U.S. foot patrol, killing one soldier in October 2008. One month before, a policeman opened fire at a police station, killing a soldier and wounding three before he was fatally shot.

There was also the Camp Chapman attack in December 2009 that killed nine CIA agents.  And in May 2007, an Afghan soldier shot and killed two U.S. soldiers at Pul-e-Charkhi prison.  And in October 2009 an Afghan policeman on joint patrol with U.S. soldiers shot and killed two of them.  And ...