The agreement created the prohibition of only nuclear development. However, there are many other forms of weaponry that can be deadly and catastrophic. Iran will be able to develop almost all of these other forms freely after eight years. One of these include ballistic missiles, which fly up into the air and, upon locking onto a target, dive down towards it, following a roller coaster like pattern. They are also cheap to build as they require less fuel. They are only propelled throughout the altitude gaining part of their flight and once they are at their peak the engines are shut off and gravity is used to pull them back down to their destination. Pursuit and development of a ballistic missile program will allow Iran to almost bully or control any inferior countries near them. Similar to the ballistic missile, the cruise missile is guided but follows a straight pattern without flying directly up. It is also powered throughout its entire flight, always making adjustments and being guided. This enhances its precision, but linearly raises the expense due to the increased consumption of fuel.