https://www.csis.org/events/asia-pacific-economic-integration-and-role-united-states-and-japan-0
The Center for Strategic and International Studies (CSIS) is a very influential think tank in the United States. You can find lots of interesting articles both in video and in audio.
Another example is:
Both the statement and the transcript are available in pdf, which will help a lot when you watch the testimony.
Chairman McCain: But one of the sources of frustration for me and other members of this committee is the situation in Okinawa and the relocation. Talk about fits and starts and setbacks and political problems in Okinawa itself. It is one of the more difficult issues, but yet, I think one of the most important. What is the witnesses' latest assessment of that situation? Dr. Green: It is complicated. The Okinawan people suffered in the Second World War like no other Japanese in that terrible battle. But it is not as black and white as it often appears in the media. Prime Minister Abe has committed to moving forward with the Futenma Replacement Facility. His chief cabinet Secretary, Mr. Suga, is working this strenuously. He is responsible for a whole host of issues, but he is focused on this.