Pre-order the pulse-racing new Jack Ryan thriller, TOM CLANCY RULES OF ENGAGEMENT, now!__________An international incident may fracture the Ryan family in the latest entry in this #1 New York Times bestselling series.Luanda, AngolaAn American intelligence team on a routine mission is wiped out. The sole survivor: Kyle Ryan, youngest son of President Jack Ryan.But the massacre of his colleagues is just the prelude to an even more devastating conflict - a deadly military coup in the central African nation. The next step is a shocking escalation, the seizure of the American Embassy and the taking of numerous hostages including the ambassador and the younger Ryan.As US forces fight insurgents street by street in the African capital city, Lieutenant Katie Ryan leads the effort to untangle the mystery behind the coup and the identity of the plotters. Is it the Chinese government? Is it a corrupt Angolan general? Or is there a darker force pulling the strings?In the White House Situation Room, President Jack Ryan and his National Intelligence Team anxiously await the answers. He may have a full Marine Expeditionary Unit at his command, but the full executive power of the presidency is useless if they can't find the target.One thing's for sure, Kyle and his fellow hostages sit at the center of the bullseye - human shields to deflect an American response. Jack Ryan has faced many challenges as President, but solving this problem is no one-man job. It's going to take all three of them to get through this.__________WHAT READERS SAY ABOUT EXECUTIVE POWER'Bringing in new Ryan family characters and characteristics. A great read, a cant-put-down book''I haven't read a Clancy book in a few years . . . Now, I need to go back and maybe start from the beginning!''My first ever Jack Ryan book . . . I thoroughly enjoyed, it kept you gripped all the way through''Keeps you on the edge of your seat''Love the Jack Ryan series! Exciting storylines that seem to come directly from today's newspaper''A lot of detailed information about the Navy and Marines, and a great description of the Ryan Family bond. I truly enjoyed it!'