The petulant adolescent responds to his union base.
Obama scoffed at Republican Wisconsin Gov. Scott Walker's suggestion that he would, on Day 1, revoke any nuclear agreement with Iran if he is elected president.
"It would be a foolish approach to take," Obama said in an interview with NPR's Steve Inskeep, "and perhaps Mr. Walker -- after he's taken some time to bone up on foreign policy -- will feel the same way."
There's a full transcript, and here's the full video of the interview -- it is cued to Obama's full answer on this question:
The shot comes as the president tries to sell the framework of a deal between his administration, other world powers and Iran to curtail Iran's nuclear weapons program in exchange for the lifting of some economic sanctions. It also comes months after a trip overseas for Walker, in which he declined to weigh in on foreign policy -- and in the midst of campaign kickoff season with several presidential candidates set to announce their intentions to run for president this month.