Gulf countries signed an agreement on Sunday for a railway project to link six states and open up “broader prospects” for travel and trade, Bahrain's Transport Minister said. The agreement was signed by transport ministers from Gulf Co-operation Council (GCC) member states at Al Zahir Palace in Bahrain. The railway project, first proposed more than a decade ago, is intended to establish a rail network linking the six member states, from Kuwait in the north to Oman in the south.