Earlier this week, Russian President Vladimir Putin revealed that his government has finalized testing of a new nuclear weapon and a nuclear-powered vehicle he claims would give his country a major tactical advantage. While those weapons would appear to be serious threats due to their range and ability to evade defenses, experts who have studied Russia's nuclear power told ABC News that there are questions about their capabilities. "There’s no independent verification of the tests or the actual performance of these weapons. Russia has pursued these technologies for years with little success," Georgia Cole, a research analyst for the UK-based think tank Chatham House’s International Security Programme told ABC News via e-mail. While Putin's pronouncements have gained the attention of the We

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