US official: "Greece has been looking around this neighborhood and recognizes the same instability that we have"
Talks proceed on expanded operations, including using more air and naval bases
The talks are at a preliminary stage, US officials said
Italy will participate in Greece-Cyprus-Egypt summit in Crete
The coalition says it does not discuss the location of its forces, citing operational security
The Turkish state news agency has divulged the locations of 10 U.S. military bases and outposts in northern Syria