Panama’s president demanded that the United States clear out the remains of explosives at military bases being handed over along the Panama Canal by the end of the year. The United States last week turned over one of the areas used for war exercises and target practice. Two others remain. About a fifth of the over 37,000 acres in the three areas are believed to be contaminated with chemicals or leftover explosives. Panama is ready to take international or legal action to force the cleanup of contaminated lands, this according to the Foreign Ministry secretary general.