Asia markets were flat in early trade on Wednesday, with energy stocks under pressure following overnight declines in oil prices and as traders eyed a meeting between the world’s top oil producers in Vienna, cnbc.com reported. Oil prices tumbled nearly 4% on Tuesday amid fresh uncertainties over an OPEC deal to reduce production levels with ministers from the 14-nation cartel slated to meet in Vienna later Wednesday to announce a decision on output curbs proposed in September. During Asian hours on Wednesday, U.S. crude futures rebounded slightly, up 0.33 percent at $45.38, after falling 3.9 percent on Tuesday during U.S. hours.To subscribe please click here