 Like Stilicho's critics pointing towards his inability or unwillingness to deal with usurpation in Britain, Gaul and Spain, and the Rhine crossing of 406, critics of Aetius point towards the civil wars of 427-433 that allowed for the Vandal crossing to Africa and its eventual loss, and Aetius' inability to retake Carthage.Hughes attempts to address this, pointing out that Flavius Constantinus Felix was responsible for the war that allowed for the Vandal crossing, and that the Romans did attempt to deal with it on several occasions, including Bonifatius in 429-432, Aspar in 430-435, and Aetius in 441.Heather states that the rise of Attila ultimately led to the loss of Africa as the Eastern Roman army and navy, which was bearing the brunt of the cost for the expedition, had to be recalled to the Balkans.