Dec. 15 (Bloomberg) -- Paul A. Volcker visited nine cities in five countries in the past eight weeks to warn that bankers and regulators âhave not come anywhere close to responding with necessary vigorâ to the worst economic crisis in 70 years. âThere is a lot of evidence that financial weaknesses brought us to the brink of a great depression,â Volcker, 82, said Dec. 8. at a conference in West Sussex, England. He told executives there that the changes theyâve proposed are âlike a dimple.â http://www.bloomberg.com/apps/news?pid=20601109&sid=aDbxsIHM30H8&pos=11