Senegalese troops charged into neighboring Gambia late on Thursday in a show of force to oust longtime ruler Yahya Jammeh after he failed to step aside when his mandate ended at midnight after losing the presidential election last month. The troops moved in shortly after Adama Barrow was inaugurated as Gambia’s first new leader in more than 22 years at the country’s embassy in neighbouring Senegal after a final effort at diplomatic talks with Jammeh failed to secure his departure.