Explanation:

The capital of Yemen is disputed between two cities: Sana'a, the constitutional capital and seat of government for the Houthis. Aden, the temporary capital declared by President Hadi in 2015. On 30 November 1967, the state of South Yemen was formed, comprising Aden and the former Protectorate of South Arabia. This socialist state was later officially known as the People's Democratic Republic of Yemen and a programme of nationalisation was begun.