SOMALIA'S president sacked his security chiefs Wednesday after Islamist Shebab fighters struck the heart of government in an escalating campaign of attacks in the capital and across east Africa.
Al-Qaeda-linked Shebab commandos stormed the presidential palace late Tuesday for the second time this year, demonstrating again their ability to infiltrate Mogadishu and hit the most fortified centres of the country's internationally-backed government.
President Hassan Sheikh Mohamud, who was not in the complex at the time of the attack, delivered a defiant message close to the charred wreckage of the car bomb that gunmen used in their attempt to storm the compound.
"I am here to stay, with Allah's will... I say to them, you will not kill us, and nor will you demolish our spirit," Mohamud said, also thanking the 22,000-strong African Union force who helped battle the attackers and guard top officials.
Despite dismissing the Shebab attack as a "failure", several top security officials whose job it is to protect the capital were fired.
"Both the police and intelligence chiefs were replaced, and the minister for the national security was named," Information Minister Mustafa Duhulow said.
Khalif Ahmed Ereg, a former intelligence chief, was named as Somalia's new national security minister.
The post had been empty since his predecessor resigned in April following a suicide attack against the national parliament while MPs were in a meeting, killing several guards and staff.
Mohamed Abdulahi Hassan was appointed as the new intelligence chief, and Mohamed Sheik Hassan as police chief.
Recent Shebab attacks have targeted key areas of Somalia's government or the security forces, seemingly as part of a bid to discredit claims the authorities are winning the war against the Islamists.
While the 22,000-strong African Union force launched a fresh offensive in March against Shebab bases, seizing a series of towns, the insurgents have largely fled in advance and suffered few casualties.
'Well trained, well financed'
Despite territorial losses, the International Crisis Group warned that the Shebab fighters continue to have "deep reservoirs of fiscal and ideological support", saying in a recent report the "long connection between Al-Shebab's current leadership and Al-Qaeda is likely to strengthen".
As Shebab-held towns shrink in number, the extremists are shifting towards using "radicalised and well-trained individuals" to carry out "assassinations and terrorist attacks in urban areas, including increasingly in neighbouring countries, especially Kenya," the ICG said.
A Shebab spokesman confirmed that the group was behind Tuesday's attack, and claimed their commandos had at one point managed to seize the president's office inside the compound known as Villa Somalia.
However, the government dismissed their claims, saying the attackers -- who were dressed in government army uniforms -- had been killed near the entrance of the compound.
"Of the four attackers, three were killed in the car park and one was captured," Duhulow said.
Bomb disposal experts detonated several explosive devices, "including a suicide vest that one attacker was wearing that had failed to detonate," he added.
Tuesday's attack appeared to be a repeat of a Shebab assault against the presidential palace in February, when the Islamists, again wearing Somali army uniforms, managed to penetrate the complex with a car bomb before being killed.
The Shebab commander in Mogadishu, Sheikh Ali Mohamed Hussein, vowed last month that the capital would become the "frontline" for assaults.
The Shebab have also increased their scope of operations since last September, when they launched an attack on Nairobi's Westgate mall in which at least 67 people were killed.
In May the Shebab carried out a restaurant bombing in Djibouti, while Uganda and Ethiopia -- countries which also contribute to the AU force in Somalia -- have been on high alert.
Kenya has also seen a wave of massacres carried out by Islamists near the coastal resort island of Lamu, for which the Shebab has claimed responsibility, as well as a string of bombings in Mombasa and Nairobi.
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Somalia sacks security chiefs after latest attacks