Between 2000 and 2003, 20 more surface-to-surface missiles were delivered by the nations in that category, according to the study.
But Israeli military officials acknowledge that they have no effective defenses against surface-to-surface missiles.
The surface-to-surface missiles are said to have a range of more than 2,000 miles.
Some suspect that the Aleppo plant will produce surface-to-surface missiles.
June 28 - Iran tests 14 surface-to-surface missiles on the second day of war games.
Three surface-to-surface missiles were fired at the town by government troops.
U.N. officials believe that Iraq wants to test a new surface-to-surface missile with a range of about 50 miles.
"They have moved some of their short-range, surface-to-surface missiles to the north and to the south," the senior Pentagon official said.
The escorting force has a total of maybe thirty surface-to-surface missiles.
The V-1 flying bomb was the first operational surface-to-surface missile.
