Delta Works needed level of flood protection and the resulting costs are a recurring subject of debate, and involve a complicated decision-making process. In 1995 it was agreed in the Delta Plan Large Rivers and Room for the River projects that about 500 kilometres of insufficient dyke revetments were reinforced and replaced along the Oosterschelde and Westerschelde between 1995 and 2015. After 2015, under the High Water Protection Program, additional upgrades are made. In September 2008, the Delta Commission presided by politician Cees Veerman advised in a report that the Netherlands would need a massive new building program to strengthen the country's
Framework Convention for the Protection of the Marine Environment of the Caspian Sea of the Caspian Sea”. In accordance with Articles 7 - 11 of the Convention the Parties undertake an obligation to take measures to prevent, reduce and control pollution from the land-based sources, seabed activities, vessels, as well as pollution from other human activities including land reclamation and associated coastal dredging and construction of dams. Convention also provides for appropriate measures to prevent the introduction into the Caspian Sea and to control and combat invasive alien species, which threaten ecosystems, habitats or species. The Parties also take preventive, preparedness and response measures to protect the environment and human beings from consequences