Reuters/Muscat

Omani leader Sultan Qaboos made a rare public appearance on Sunday to address the annual session of parliament, in his first live broadcast speech since he returned from an eight-month medical stay in Germany.

His long absence fuelled concern over the succession in the Arabian peninsula state over which Qaboos, nearly 75, has been ruler since 1970.

Upon his return in March, state media said his treatment had been a success and that he was in "complete health." But he has made few public appearances since returning.

Appearing in good health, Qaboos spoke for three minutes in his address to the Oman Council, which is made up of both elected and appointed members.

He has helped to transform Oman into a prosperous state that plays a small but important role in regional diplomacy.

Oman has helped facilitate peace efforts in the region, acting as an intermediary for contacts between Iranian and US diplomats that culminated in the landmark nuclear deal in July and backing talks to end Yemen's ongoing civil war.