Al-Ahmar makes some Western officials nervous because of his links with radical Sunni Islamists.
CNN: Yemen after Saleh: Still a treacherous road
2.
General Mohamed Saleh al-Ahmar, the half-brother of the former president, refused to stand down as head of the air force.
BBC: Yemen's Sanaa airport re-opens after pro-Saleh protest
3.
Yemeni observers say the Muslim Brotherhood has long been influential within al-Ahmar's military command, and he is known for his antipathy toward Yemen's Shiites.