(Reuters)  Turkey’s military said on Friday it had seized power but President Tayyip Erdogan vowed that the attempted coup would be put down. If successful, the overthrow of Erdogan, who has ruled Turkey since 2003, would be one of the biggest shifts in the Middle East in years, transforming one of the most important U.S. allies while war rages on its border. Even if it fails, the coup attempt could destabilize a pivotal country […]