Greek taxi drivers decided on Sunday to escalate their strike action until the government satisfies their demands."We will continue the mobilization until the problem is solved," union leader Thymios Lyberopoulos said following a union meeting convened in order discuss the future of their course of action.The taxi drivers, who oppose the government's plans to deregulate their sector, will gather Monday morning in front of the transport ministry hoping to meet minister Yannis Ragoussis after talks between the two sides failed on Friday.