Yes, I think that governments need to intervene in foreign exchange markets when bad policies are in place. It is important for many countries in the world to have a strong and stable economy, and when bad policies could damage the international economy and foreign markets I think that is when the government is needed to step in.
Governments should intervene in foreign exchange markets. China has been a culprit in devaluing the American dollar but offering imports at a value that is different from ones used in China. Regulation is needed if there is going to be tampering with foreign exchange because it can affect the economies.