The ancient Olympic Games were athletic contests among Greek city-states, held at the sanctuary of Olympia every four years in honour of Zeus. They are traditionally dated to 776 BC, and the four-year cycle, called an Olympiad, became a unit of time that Greeks used to date events by the winner of the stadion sprint. During the games an Olympic truce was announced so athletes and pilgrims could travel safely. Winners received olive-leaf wreaths. Only freeborn Greek men could compete for much of the history, and the games were also used by city-states to show power and announce alliances. The last recorded celebration was in AD 393.

Israeli reports also say the cabinet directed the military to prepare for a possible new attack on Iran.

Angkor, near Siem Reap in northern Cambodia, was the capital of the Khmer Empire, which ruled much of mainland Southeast Asia between roughly the 9th and 15th centuries. At its height the city spread across about 3,000 square kilometres, making it the largest pre-industrial city on Earth by area. Its growth depended on water: huge reservoirs called barays, along with canals and embankments, stored monsoon rain and carried it to rice fields. That system let farmers harvest more than once a year and fed a very large population through the dry season. The temple complex of Angkor Wat, built in the early 12th century, is the best-known monument and still stands at the heart of the park.