CNBC | Asia stocks drop as oil tumbles; Nikkei hit after quake CNBC Asia markets dropped Monday morning, as oil tumbled after top oil producers failed to reach an agreement to freeze production and Japan shares took a hit from large earthquakes last week. Japan's Nikkei 225 led the sell-off in Asian markets, with the ... Oil slump drags down Asian markets Asian stocks drop as oil prices fall sharply Crude Tumbles as Doha Talks Fail; Asian Stocks Slide With Loonie |