Obama has not, as Sullivan points out, traded arms for hostages with Iran, or started a war with no planning for the inevitable occupation that would follow. But there are different questions that could be asked about Obama that would perhaps be more relevant to his behavior.
Has he ordered the assassination of any American citizens in secret without due process? Did he kill any of their teenage kids without ever explaining how or why that happened?
Has he refused to reveal even the legal reasoning he used to conclude his targeted killing program is lawful?
Has he waged an unprecedented war on whistleblowers?