Somalia: Islamists al-Shabab and Hizbul Islam 'to merge'

The two Islamist groups fighting the weak UN-backed Somali government, al-Shabab and Hizbul Islam, are to merge, according to reports. The two had been allies but have fallen out over the past year, with Hizbul Islam losing ground. Some see the merger as a takeover by al-Shabab, which has links to al-Qaeda.