I had to submit a resume and cover letter through my career services website.
A few weeks later they emailed me to schedule a first round interview on the phone. It was mostly questions about current foreign affairs and the state of the economy, with some basic macro questions/reasoning snuck in (ex - what is the effect of oil prices rising?) I thought I did really poorly because I wasn't so up on my European debt crisis info, but they let me through to the final round.
They emailed about final rounds almost a month later, and by then I had already accepted another offer, so I had to decline.