Bloomberg scrutinised. Unusually, a journalist decided to take a sceptical look at Bloomberg Philanthropies and its many proxies and the impact of their war against vaping.  The result is an excellent must-read piece by Mark Gunther [...] The response. The interesting thing is that this drew a joint response from Kelly Henning of Bloomberg Philanthropies, Matthew Myers [...] What is unusual about this letter is that Henning, Myers and Koval actually try to defend their positions.  Normally, they don’t defend their positions, they just assert them with millions of dollars of amplification. It offers a rare opportunity to provide a critique of their stance. [...]