Although aviation experts dismissed Russian intelligence's suspicions of a US hand in the May 9 plane crash in Indonesia, the many unanswered questions about the crash fuel conspiracy theories.
An angry Moscow has vowed to repatriate Russian arms merchant Viktor Bout, whom a US court convicted of conspiring to kill American citizens.
Russia has remained a staunch supporter of Syria's President Assad, blocking UN efforts to impose an international arms embargo.
Russian President Dmitry Medvedev said Tuesday that the Defense Ministry should open its contracts to bidding by foreign firms if Russian products didn't fit the bill.
At least 54 people died when the river boat Bulgaria sank Sunday due to a combination of poor Soviet-era equipment, a culture of corruption that undermined safety rules, and unfortunate timing.
Russia today tested a second prototype of its Sukhoi T-50 fighter, a fifth-generation warplane that is said to be comparable to the US F-22 Raptor.
If Russia can reduce reliance on its aging Soviet-era nuclear missile deterrent, analysts say it could create a 'whole new ball game.'