Kenyan forces assault terrorists in Nairobi's Westgate Shopping Mall on Monday afternoon, killing two and claiming to take control of all floors of the building despite sporadic gunfire and the continued presence of the attackers inside.
The Somali militant group Al-Shabaab has taken credit for the attack, which is in its third day, as retribution for the government sending Kenyan troops to Somalia to help fight insurgents.
CNN's Nic Robertson gives more background on the terror organization.
Robertson reports their full name is Harakat al-Shabaab al-Mujahideen.
Perhaps Shabaab's most well recognized recruit is American Omar Shafik Hammami from Alabama, known also as Abu Mansoor al-Amriki.
Hammami was killed recently in infighting but the organization boasts it has other American recruits.
As far back as 2010, British security chiefs have been warning about Al-Shabaab's threat beyond Somalia's border. In September of that year, Jonathan Evans, the head of MI5, warned "It is only a matter of time before we see terrorism on our streets inspired by those who are today fighting alongside Al-Shabaab."
Now this group loosely controls swaths of southern Somalia all the way to the Kenyan border and they vow attacks inside Kenya.
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