World War I involved 32 nations from 1914 to 1919. It redrew the world map and reshaped many borders in Europe. The collapse of the Russian Empire created Poland, the Baltics, and Finland.

An alarming outbreak of foot-and-mouth disease (FMD) has been found on nearly 1,000 farms in Hungary, triggering border closures. Gergely Gulyas, the country's chief of staff, said the source of ...