The ongoing struggle between Ukraine and Russia over energy has sharply escalated, with Turkey and European countries now reporting sharp cutoffs of Russian gas shipped to Europe through pipelines across Ukraine.
A female suicide bomber killed at least 10 and injured more than 50 others outside a subway station in Moscow Tuesday night. Militant Islamists later claimed responsibility for the attack.
In the wake of dual suicide bombings in Moscow Saturday, Russian President Vladimir Putin pledged Monday that his country would not bow to terrorists.
Russian doctors said Sunday that most of the 117 hostages who died during the military's raid on a Moscow theater were killed by the gas used to incapacitate the Chechen guerrillas holding more than 750 people captive.
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