Charles Krauthammer: Sydney’s Man Haron Monis … was a marginal, alienated Iranian immigrant with a cauldron of psychopathologies. Described by his own former lawyer as ‘unhinged,’ Monis was increasingly paranoid. … His religiosity was both fanatical and confused. A Shiite recently converted to Sunni Islam, his Internet postings showed not just the zeal of the convert but a remarkable ignorance of Islam and Islamism. He even brought the wrong Islamic banner to the attack. He had to ask the authorities to provide him with an Islamic State flag. Which led to a frantic search to find an Islamic State connection or conspiracy. But for the disturbed like Monis, the terror group does not provide instructions, it provides a script. It offers the disoriented and deranged a context, a purpose, a chance even at heroism. I suspect this is the case with most of the recent cluster of lone-wolf terrorist incidents, from the beheading of a fellow worker in Oklahoma to the Queens ax attack on New York City police. … The great new specter is the homegrown terrorist. But he is less homegrown than we imagine. He is fed from abroad. Which is where, as ever since 9/11, the battle must be fought.