Iran said it successfully test-fired the longest-range missiles in its arsenal on Monday, The Associated Press reported. State television said the powerful Revolutionary Guard, which controls Iran's missile program, successfully tested the medium-range Shahab-3 and Sajjil missiles with can fly up to 1,200 miles (2,000 kilometers). It was the third round of missile tests in two days of drills by the Guard. The Sajjil-2 missile is Iran's most advanced two-stage surface-to-surface missile and is powered entirely by solid-fuel while the older Shahab-3 uses a combination of solid and liquid fuel in its most advanced form. Solid fuel is seen as a technological breakthrough for any missile program as solid fuel increases the accuracy of missiles in reaching targets.