Franco-German war of 978–980: Holy Roman Emperor Otto II lifts the siege of Paris and withdraws.

The Franco-German war of 978–980 was fought over possession of Lotharingia and over personal honour. In the summer of 978, King Lothair of West Francia (France) launched a surprise attack on Aachen, almost capturing the Emperor Otto II, king of East Francia (Germany) and of Italy. By autumn Lothair had returned to West Francia, while Otto had convoked a diet and assembled an army. To avenge his honour, Otto invaded West Francia. Unable to take Paris after a brief siege, he returned to Lotharingia. During his retreat, after the bulk of his army had crossed the river Aisne, the West Franks caught up to his baggage train and slaughtered it. In 980, the kings made peace. Lothair renounced his claim to Lotharingia.

Otto II, called the Red, was Holy Roman Emperor from 973 until his death in 983. A member of the Ottonian dynasty, Otto II was the youngest and sole surviving son of Otto the Great and Adelaide of Italy.

Paris is the capital and largest city of France. With an estimated population of 2,048,472 in January 2025 in an area of more than 105 km² (41 sq mi), Paris is the fourth-most populous city in the European Union and the 30th most densely populated city in the world in 2022. Since the 17th century, Paris has been one of the world's major centres of finance, diplomacy, commerce, culture, fashion, and gastronomy. Because of its leading role in the arts and sciences and its early adoption of extensive street lighting, Paris became known as the City of Light in the 19th century.

November 30 is the 334th day of the year in the Gregorian calendar; 31 days remain until the end of the year.