By BRADLEY KLAPPER and DESMOND BUTLER, Associated Press
WASHINGTON (AP) — The Boston Marathon bombing could provide an opportunity for the U.S. and Russia to find some common ground for cooperation as authorities investigate the two ethnic Chechens accused of carrying out the attack.
Ties between the two nations have soured over disputes about stopping Syria's civil war, child adoptions and other issues. But understanding how the brothers became radicalized is of paramount importance to Washington as it seeks to prevent similar such attacks. It's also important to Moscow, which has long battled terrorism in its southern territories.
But the tragedy also risks hardening resentment between former Cold War foes which, under President Barack Obama and Prime Minister Vladimir Putin, have seen efforts to "reset" relations falter. Even their counterterrorism coordination has sometimes been strained.
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