Sarah Phillips, writing for Foreign Policy magazine, manoeuvres through the complexities of Yemen's political conflict:
There aren't many foreigners traveling to Sanaa these days, but one group of outsiders is getting a lot of attention: an FBI forensics team, which reportedly arrived last week to investigate the attempted assassination of Yemeni President Ali Abdullah Saleh, who is now convalescing in Saudi Arabia.
Evidence from the scene indicates that the explosion may have been caused by a device that was planted inside the mosque on the presidential compound, and not by a mortar shell or rocket, as was initially reported. If true, this means that someone with close access to the president was involved, which raises the question of why members of the Yemeni regime's inner circle -- set to mark its 33rd anniversary in power next month -- now appear intent on destroying each other?
To answer this question, it is necessary to look beyond the protests that have called for Saleh's resignation and instead look at the premises of the political settlement that has held the inner circle together for so long.
The first spectacular rupture within the group came on March 21, when Gen. Ali Mohsen al-Ahmar publicly defected from the Saleh regime three days after snipers gunned down peaceful protesters in Sanaa, killing more than 50 people. Ali Mohsen is the country's most powerful military leader and a distant cousin of Saleh. A fight between the two men has been simmering for at least a decade; empathy for the protesters was certainly not the only factor contributing to Ali Mohsen's decision to jump ship. The rivalry between the two former allies was probably more decisive.
By joining the opposition movement, Ali Mohsen and other defectors from the regime have not necessarily heralded a new era for the Yemeni people. Instead, they appear to be settling old scores.
The inner workings of Saleh's Yemen are incredibly opaque. Think of a series of concentric circles with him at their center: That's the regime.