Canada has expelled six Indian diplomats, linking them to the murder of a Sikh separatist leader in a major deterioration of relations between the two countries. The UN Security Council has expressed strong concern after several peacekeeping positions in southern Lebanon came under fire amid clashes between the Israeli military and Hezbollah. With just three weeks to go until election day, Republican candidate Donald Trump and Democrat rival Kamala Harris have been in the must-win state of Pennsylvania holding rallies. NASA has launched a spacecraft from Florida on a mission to examine whether Jupiter's moon Europa has conditions suitable to support life.  Find today's recommended read here. Listen to our weekend episode 'The legal fights shaping the US election' here. Sign up for the Reuters Econ World newsletter here. Listen to the Reuters Econ World podcast here. Visit the Thomson Reuters Privacy Statement for information on our privacy and data protection practices. You may also visit megaphone.fm/adchoices to opt out of targeted advertising. Learn more about your ad choices. Visit megaphone.fm/adchoices