The Cuban Affair by Nelson DeMille Simon & Schuster, $28.99, 429 pages, ISBN 978-1-5011-0172-4 Who doesn’t dream of sunny, warm days with an ample supply of cold drinks and an ocean to play in, when we’re up to our ear-muffs in icy roads, snow and sub-freezing temperatures, day, after day, after day . . . and if we can’t actually go there, we can at least escape in literature