the G-Zero World" , CNBC", March 14, 2011</ref></blockquote> In July 2012, Roubini predicted a global “perfect storm” in 2013, with economies all over the world slowing down or completely halting. 2014-19 By May 2014, Roubini had become bullish, arguing many of the risks to the global economy had receded. He pointed to an improving European economy and stronger euro, steadying of the economy in Japan, and a marked improvement in the United States. He praised the Federal Reserve for its unconventional monetary policy, which he forecast would last for a few more years, supporting equity markets. At the start of 2017, Roubini speculated that the election of Donald Trump as president might portend a geopolitical shift away from globalization and more toward isolationism, a change which he felt could lead to global instability and rising military conflicts among other countries. Roubini attacked cryptocurrency in remarks to a U.S. Senate Banking Committee in 2018. That year he was a member of the Berggruen Institute's 21st Century Council. In November 2019, he wrote "Nine Reasons Why the Stock Markets Are Far Too Optimistic". 2020 On February 17, 2020, he warned of financial vulnerabilities that "could trigger severe economic, financial, political, and geopolitical disturbances unlike anything since the 2008 crisis." Two days later, the market peaked prior to what would become the 2020 stock market crash. Following a relatively minor decrease, Roubini warned on February 24 that the markets were still too complacent about coronavirus, predicting a government response followed by positive market reaction, which would then fizzle. Cryptocurrencies He is a frequent critic of cryptocurrencies such as Bitcoin. Roubini tweeted: "99% of crypto land is one shitcoin traded for another shitcoin. And the average shitcoin lost 90% or more of its value in the last year. So Crypto Land is Crap Land, a cesspool of lunatics with severe Freudian scatological obsessions that swim 24/7 in their own stinking shit." He views blockchain as "the byword for a libertarian ideology that treats all governments, central banks, traditional financial institutions, and real-world currencies as evil concentrations of power that must be destroyed." He regards cryptocurrencies and blockchain as both utopian and at bottom "about greed" on the part of their promoters. In 2018, he told Ethereum founder Vitalik Buterin to "just shut up." In 2019, he called BitMEX CEO Arthur Hayes a "sleazy coward," and told him to "shut up." Consulting business He formed