[s_q_b]

The magnetic mines are exactly what they sound like. Someone drives by on a motorcycle, slaps an explosive on the side of a vehicle, and drives away. Not very subtle, but apparently very successful in taking out Iranian nuclear scientists.

Polonium is actually fairly clever. It's a radioactive material that acts as a slow-moving poison.

It took a while for Western physicians to diagnose, so many domestic leaders, political dissidents and even foreign heads of state (Arafat may have been killed in this manner) fell victim to it.