Amid tensions with the buildup of US military assets in the Caribbean Sea, Venezuelan President Nicolas Maduro has posted a video on his Facebook page, of him driving through Caracas while apparently conducting an interview on the country's health system and other matters. The video shows no visible enhanced security, and in one case Maduro stops in traffic and later lowers his window. The United States has placed a $50 million reward for Maduro's arrest and this week designated him as the head