But I thought they were all moderates!

One might reasonably have thought that those hired to fill government positions by the Karzai government would have supported the Karzai government. Of course, any institution can be infiltrated by its enemies, but compounding the problem here is a fact that we have pointed out many, many times at Jihad Watch: there is no reliable way to distinguish jihadists from peaceful Muslims. There is no Islamic authority (with the arguable exception of the Spanish ulama) that has declared that Muslims who hold to the theology and ideology of Osama bin Laden are not true Muslims and are not welcome in their mosques. Making this even more difficult is the doctrine of religious deception founded on Qur'an 3:28. Thus the Karzai government couldn't have kept Taliban loyalists out, even if it had tried -- and that's something for the learned analysts to ponder not only as it concerns our policies in Afghanistan, but numerous other policies as well, including Iraq, immigration, the language used in defending ourselves from this threat, and more.

"Afghan gov't employees nabbed over Karzai plot," by Rahim Faiez for AP, May 4 (thanks to Jeffrey Imm):

KABUL, Afghanistan (AP) — Authorities have arrested two Afghan government employees for alleged involvement in last week's plot to kill President Hamid Karzai, top officials said Sunday.

But the government maintained that al-Qaida-linked militants based in neighboring Pakistan masterminded the April 27 attack on a military parade in Kabul. Karzai escaped unharmed but three others were killed.

"Al-Qaida was involved in the attack. That is very clear from us," intelligence chief Amrullah Saleh told a news conference.

Defense Minister Abdul Rahim Wardak identified one of the arrested government employees by a single name, Jawed, and said he had worked at a Defense Ministry factory repairing weapons. He allegedly provided two AK-47 assault rifles and a machine-gun to the three gunmen.

Wardak identified the second as a police nurse, Zalmay, who was allegedly in contact with one of the key plot leaders.

He declined to give further details about the rank of the two men, but disclosed that the two AK-47s used by the attackers were government-issued weapons. Authorities were still trying to determine where the machine-gun came from, he said.

Despite the two arrests made in Kabul after the attack, intelligence chief Amrullah Saleh again pointed to Afghanistan's neighbor, Pakistan, as the source of the plot....

The network is associated with Taliban and is also believed to have links to al-Qaida members. It is part of a myriad of militant groups supportive of Afghanistan's former hardline Islamist regime and bent on toppling Karzai's Western-backed government.