<p>3 course in economics surely isn't 'focusing solely on economics for an entire year' unless you're planning on earning 3 credits a year.</p>
<p>Microeconomics and macroeconomics should be a part of any core curriculum (maybe we could wipe out utopian socialism and other forms of stupidity within a few years!). Penn's IR adds international economics on top of that as a mandatory part of the IR curriculum, which makes sense to me.</p>