Austria and Switzerland aim to invest €2.1 billion ($2.25 billion) to improve flood defences on the Rhine River. The Austrian parliament unanimously approved a state treaty to increase flood protection measures along a stretch of the border river before it flows into Lake Constance. The agreement on the project was signed between Austria and Switzerland in May. The Swiss parliament still has to approve the pact. The two countries will share the costs equally. The goal is to increase the river’s flow capacity. At the moment up to 3,100 cubic metres of water per second can safely flow down the A…