April 13 (Reuters) - Wall Street's main indexes opened lower on Monday after weekend talks between the U.S. and Iran failed to deliver a deal nL6N40V09S to end the war, threatening a nascent recovery in equities and risking a renewed bout of volatility.

The Dow Jones Industrial Average fell 198.4 points, or 0.41%, at the open to 47,718.21. The S&P 500 fell 10.4 points, or 0.15%, to 6,806.47​, while the Nasdaq Composite dropped 53.7 points, or 0.23%, to 22,849.23.

(Reporting by Niket Nishant and Avinash P in Bengaluru; Editing by Devika Syamnath)