Re the Americans that are being held in Iran for spying or is this just another act of state terrorism?

A ten-page research paper on a relevant topic is required. the paper will reflect the research, analysis, synthesis, and conclusions, containing at least seven scholarly references/sources. The paper will focus on the 4 Americans w/ US & Iranian passports there name and a brief bio of each individual. Why are they being held and What is there charge. What is the respone of the U.S on this isssue . What was the President Bush statement he announced on June 1st on this matter at hand. Can we consider it an act of terrorism on Irans part. What is our belief on why those individuals are being held.