This week geopolitical tensions have heightened following an assassination attempt on a former Russian spy turned double agent. While this is pretty normal behaviour from the Kremlin, what makes this event so incredible is the method chosen. The reports suggest that a military grade nerve agent was used in a very public setting, an Italian restaurant. That the Russian government would sanction such a high-profile execution, willingly endanger members of the British public and expose the existence of a secret illegal chemical weapons program all suggests they were sending a message. What that message might be is unclear, but it can’t be good for global stability.