The CIA hasn't conducted strikes in Pakistan since the border incident, reflecting U.S. concerns about taking actions that could exacerbate tensions.
Mr. Yu, in an interview, said Chinese authorities didn't respond to his request for help for more than week after he reported the incident to border and maritime police.
The U.S. troops escorted the troops back to the Iraqi-Turkish border the following day without incident, a Pentagon official said.
The ISI is often accused of acting autonomously from the government, but at this moment the country's leadership is furious with the Americans and Nato forces for last month's incident on the border in which 28 Pakistani troops were killed.
But the border blast was clearly the deadliest incident in Turkey since the Syrian uprising began 23 months ago.
Odhikar, a human rights organisation which has been documenting the killing of Bangladeshi civilians along the 4, 000km (2485-mile) border by Indian forces, said the incident was "totally unacceptable, totally inhuman and unjust".
Afghan officials say the incident began after an Afghan Border Police unit deployed on the Goshta border noticed that the Pakistani forces began additional work on fortifying their outpost, despite recent agreements to suspend such construction.
The UK Border Agency said it had learned lessons from the incident.
The Israeli army had been prepared for such an incident and had stepped up patrols along the border with Gaza, Israel Defense Forces (IDF) spokesman Brig-Gen Yoav Mordechai was quoted as saying.
Another border guard was jailed for life for his alleged role in the incident at the Arkankergen post near Almaty, after he had reportedly confessed to the authorities.
The Americans are still investigating an incident two weeks ago in a village near the Macedonian border, when a morning of mortar-fire wounded ten Kosovar civilians, and killed three people.
In another incident, mortar shells were fired at an Israeli Army post inside Israel near the Gaza border.
The US authorities said soon after the 10 October 2012 incident that the suspected drug smugglers first abandoned a haul of drugs, ran back across the border and then started throwing stones at the border patrol.
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In the days after the incident, U.S. officials cast doubt on Pakistani claims that incorrect coordinates were relayed to the border-control center.
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