There are several political problems that are presented through the examples of river sharing in various areas. Disputes over the allocation of water is a big one as this can be a significant source of tension. Disagreements over the distribution of water resources, especially during times of scarcity, can lead to conflict. There are also conflicts of downstream impacts. The Nile River conflict with Egypt is an example of this. Actions taken by one country upstream can have direct consequences for those downstream. Pollution, excessive water extraction, or dam construction upstream can affect water quality downstream, leading to conflicts over the responsibility for dealing with these impacts. Infrastructure is another issue that we saw with the Colorado river. Building dams, reservoirs, or other water infrastructure within one region can alter the natural flow of the river and impact downstream nations. There are also issues of climate change, compliance of policy, security issues, and more