WASHINGTON, May 12 (Reuters) - The United States' war in Iran has ​cost $29 billion so far, a senior Pentagon official said on Tuesday, an increase of $4 billion from an estimate provided late last month.

Jules Hurst, who is performing the duties of the ​comptroller, told lawmakers that the cost included updated repair and replacement of equipment and operational costs.

(Reporting by Idrees Ali, Phil Stewart and Doina Chiacu; Editing by Doina Chiacu)