Blake & Mortimer Tome 15
The Secret of the Swordfish. Part 1, The Incredible Chase

In a past almost - but not entirely - like ours, the world lives in dread of a new power, an empire centred in Tibet and led by a megalomaniac. When the inevitable attack comes, it destroys all opposition, and capital cities across the planet are left burning. But, in Great Britain, Professor Mortimer, inventor of a mysterious weapon named the Swordfish, and his friend and protector Captain Blake have escaped the destruction, and must make their way to a secret base...