'Dr. Doom' Nouriel Roubini says Credit Suisse may be too big to save and risks igniting a 'Lehman moment'

• "Dr. Doom" economist Nouriel Roubini said Credit Suisse may be too big to fail and too big to save.
• He told Bloomberg TV there are doubts Switzerland could engineer a bailout.
• The Swiss National Bank said it will provide liquidity to Credit Suisse, if necessary.

Nouriel Roubini, whose correct prediction of the 2008 global recession earned him the title of "Dr. Doom," said trouble at Credit Suisse is may be too much for Switzerland to handle.