Full independence for Syria, the National Bloc's aim, was achieved by 1946 at which point the party could not withstand personal and regional rivalries. The party was dissolved in 1947 and split into two parties: the National Party, based in Damascus, and the People's Party, based in Aleppo. Whereas the People's Party was friendly to the interests of Hashemite Jordan and Iraq, the National Party was opposed to them. Both parties were major players in Syrian politics until the 1963 Syrian coup d'état which brought the Ba'ath Party to power and drove most political parties underground. Following the Damascus Spring, there was speculation that such parties might be revived. With the onset of the Syrian Civil War, a new National Bloc appeared claiming the heritage of the original party. The new movement was co-founded by Mustafa Kayyali, grandson of one of the historical leaders, Abd al-Rahman al-Kayyali.