(250717) -- LONDON, July 17, 2025 (Xinhua) -- British Prime Minister Keir Starmer (L) shakes hands with German Chancellor Friedrich Merz at 10 Downing Street in London, Britain, on July 17, 2025. British Prime Minister Keir Starmer and German Chancellor Friedrich Merz on Thursday signed a wide-ranging bilateral deal covering various areas including defense and migration, which is believed to be the most significant treaty between Britain and Germany since the end of World War II. (Xinhua)