The London Stock Exchange closed on Monday with a gain of 1.26%, driven by the advance of oil and defense companies, in a session marked by the rise of crude oil amid the lack of progress in negotiations between the United States and Iran to end the war. The main index, the FTSE 100, added 128.38 points to close at 10,323.75, while the secondary FTSE 250 advanced 0.07% to 22,611.70 points.
