By Louis Charbonneau and Parisa Hafezi NEW YORK/ANKARA, **v 12 (Reuters) - Despite nearly a year of negotiations, Iran and six major powers are unlikely to meet a **v. 24 deadline to reach a Final deal to lift international sanctions on Tehran in exchange for curbs on its nuclear program, officials say. Western and Iranian officials told Reuters the two sides would probably settle for a**ther interim agreement that builds on the limited sanctions relief agreed a year ago as they hammer away at their deep disagreements in the coming months. ...