Iran began construction of the first phase of the project involving a 225-kilometer (140-mile) stretch at an estimated cost of $3 billion. The Fars report Monday said the entire project is to be completed in the second half of 2013. The deal was signed between Iran, Iraq and Syria last July.
Along with Russia and China, Iran has been an ally of Damascus during the conflict.
Associated Press writers Suzan Fraser in Ankara, Turkey and Maamoun Youssef in Cairo contributed to this report.
By Elaine Donnelly
Extending sexual misconduct to combat units
Independent voices from the TWT Communities
Columns from Voices around the World talking about the events, people, politics and social issues that concern us wherever, and whoever, we are.
Video reviews of today's hottest trends in Minecraft (servers and mods) along with a look at the latest video games with your host MCairsoft14 (alias Jerad Zad).
Covering the world of soccer, including the World Cup, Major League Soccer, D.C. United and the English Premier League and other interesting sporting events.
Contributions to the Communities Sports desk from readers.
Benghazi: The anatomy of a scandal
Vietnam Memorial adds four names
Cinco de Mayo on the Mall
NRA kicks off annual convention