DOHA, Qatar (AP) — Qatar said Wednesday it had pulled all of its troops from the border of Djibouti and Eritrea, East African nations that have a long-running territorial dispute which Doha had helped mediate.

Qatar offered no explanation for the move, though it comes amid a diplomatic dispute with other Arab nations that have cut diplomatic ties and now are trying to isolate Qatar from the rest of the world.

While the dispute hasn't escalated to a military confrontation, Qatar's military is dwarfed by neighboring Saudi Arabia and the United Arab Emirates, two of its biggest opponents in the crisis.

The 450 Qatari troops controlled a mountainous border crossing between Eritrea and Djibouti, said Nasredin Ali, a spokesman for Eritrea's biggest armed group, known as the Red Sea Afar Democratic Organization. Eritrean forces moved in after the troops departed, Ali said.

Eritrea's top diplomat to the African Union, Araya Desta, told The Associated Press the move came after Eritrea cut diplomatic ties to Qatar. However, Desta said his country wanted no confrontation with Djibouti.

"We don't want to take any of Djibouti's land," Araya said. "The last time we had some skirmishes. It was unnecessary."

Doha mediated the conflict between the two countries in 2010. Gulf nations have stationed troops in both East African countries, using it as a jumping-off point for the ongoing Saudi-led war in Yemen.

Saudi Arabia, Egypt, the United Arab Emirates and Bahrain accused Qatar of supporting terrorism and severed ties last week. Qatar denies the allegations, but its ties to Iran and embrace of various Islamist groups have put the country under intense scrutiny.

Meseret reported from Addis Ababa, Ethiopia. Associated Press writer Jon Gambrell in Dubai, United Arab Emirates, contributed to this report.