US STOCKS-Wall St falls in broad selloff; Twitter tumbles
* AIG shares slide after posting decline in earnings
* Office Depot to close 400 U.S. stores; shares up 16 pct
* Einhorn bets Athenahealth will fall, traders sell
* Indexes down: Dow 0.8 pct; S&P 0.9 pct; Nasdaq 1.4 pct (Updates to close)
By Rodrigo Campos
NEW YORK, May 6 (Reuters) - U.S. stocks fell broadly on Tuesday, closing at session lows, with AIG pulling financial shares lower after disappointing earnings and as a slide in Twitter took down other names in the technology and internet space.
Traders also kept an eye on developments in Ukraine, where supporters of Russia and of a united Ukraine are accusing each other of tearing the country apart. The former Soviet republic is sliding toward war.
"The short-term issue is Ukraine. We don't know when we'll wake up one morning and (Russian President Vladimir) Putin is going to be in eastern Ukraine," said Jack De Gan, chief investment officer at Harbor Advisory Corp in Portsmouth, New Hampshire.
Twitter shares tumbled 17.8 percent to $31.85 after the expiration of a six-month "lock-up" period that had restricted the sale of about 82 percent of its outstanding stock. Continuación...