The Human Test Part 1 by Paul Hunter

Using futuristic, industrial technology and weaponry, unknown perpetrators, without motive or claims of responsibility, have unleashed a series of devastating attacks around the world; millions of people have simply vanished; cities and territories desolate. Against a global backdrop of impending war, panic, and deteriorating social order, four powerful, international government figures, including the UK Prime Minister herself, are sucked into a lethal power struggle with mysterious and powerful forces that could ultimately lead to the annihilation of the entire human race.