By Arathy Somasekhar and Ernest Scheyder HOUSTON (Reuters) -Energy industry leaders said the burgeoning energy crisis is perhaps more dire in natural gas markets than in crude oil, due to Europe’s dependency on Russia and as prices have been sky-high for months. Panelists at this year’s CERAWeek conference in Houston have stressed increased need for secure energy supply. While world crude markets have been roiled by the U.S. decision to stop importing Russian oil, Asian and European gas markets have been in turmoil since last year as Russia slowed pipeline flows. “Clearly what is happening in …