Ivan's Hammer by Thomas W. Baker
Approx. 77,590 words.
Published on June 1, 2011.
With stars in his eyes, Alex helps Nika, a college crush, discover the original WMD. They stumble onto a decades-old secret of unearthly danger. Suspects themselves, they prove their innocence and devise the counter-weapon, fighting bureaucracy to build the solution before the doomsday weapon hits home. With their hijack working perfectly, they find a final feint and final fiend could end it all.