The main suspects in the Boston Marathon bombing are two brothers from Chechnya, a Russian republic that has been the scene of cyclical revolts and brutal crackdowns for the past 200 years.
After the Boston bombings, Russian President Putin and US President Obama announced closer cooperation on counter-terrorism. But Americans should have their eyes wide open about any counter-terrorism agreements with Russia.
The Tsarnaev brothers, suspects in the Boston bombings, are ethnic Chechens, stemming from a tribal society in which a code of honor and revenge plays a major role. As questions turn to motive, this code may be far more relevant than the brothers' views of Islam.