The US Army counterattacked with "with counter fire, close air support and attack helicopters," according to a press release. Ten Haqqani Network fighters were killed and one was detained, the US military said. The Afghan Interior Ministry put the number of terrorists killed at 22, while some reports put the number killed at more than 30.

The large number of enemy fighters killed during the counterattack indicates that an assault team was prepared to enter the combat outpost if the suicide bomber created a breach in the wall.

Zabihullah Mujahid, a spokesman for the Taliban in eastern Afghanistan, took credit for the attack. Mujahid claimed that more than 8,000 kg of explosives were used in the attack.

In the past, the Taliban, al Qaeda, and allied terror groups have conducted numerous attacks of this nature in Afghanistan, Pakistan, Iraq, and Yemen.

The rocket attack is designed to cause the defending troops to take cover.

The suicide bomber, or in many cases, bombers, is assigned to create a breach in the outer wall so that a backup suicide bomber or an assault team can follow through to overrun the base. The Taliban have had some success in these attacks in Afghanistan and Pakistan, and used this method to penetrate the outer gate of the US embassy in Sanaa, Yemen.

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