Dark Winter — Andy McNab

Dark Winter - the sixth in Andy McNab's thrilling series - finds Nick Stone on his latest mission against Osama Bin Laden's network of terror.
Dispatched to Malaysia, all Stone needs to do is assassinate a suspicious biochemist. But there are complications - not least the attractive woman he is working alongside.
Target neutralised, Stone returns to the USA to find turmoil in his personal life. He is guardian to a teenage girl who is haunted by her traumatic past and attempting to numb it with a heavy drug dependency. Stone knows he is the only one who can help her, but her scars run deeper than he thinks.
Before long, the conspiracy he has uncovered unravels to reveal a doomsday threat against the populations of New York, London and Berlin. Stone soon faces the ultimate trade-off: the life of someone he loves, against those of millions he doesn't even know…