BY JOE CONASON Few aspects of American politics are as ridiculous and dangerous as the right-wing urge to substitute macho posturing for foreign policy. That irrepressible habit surfaces constantly now that President Obama is in the Oval Office, most recently when he shook hands with Venezuelan President Hugo Chavez at the Summit of the Americas, a smiling moment that provoked calls for impeachment among the most deranged conservatives. Such emotional excesses arise from deep insecurities, […]