Victoria Falls a visa each time they cross the border; visas can be obtained at both border posts. Costs vary from US$50–$80 (). Visa regulations change frequently; visitors are advised to check the rules currently in effect in both countries before crossing the border in either direction. Additionally, foreign tourists may purchase a KAZA visa for US$50 that will permit visitors to travel between Zambia and Zimbabwe for up to 30 days as long as they remain within the covered countries. A famous feature is the naturally formed "Armchair" (now sometimes called "Devil's Pool"), near the edge of the falls on Livingstone
Countries dependent on the Bay of Bengal settled their maritime boundary dispute in 2012 at the International Tribunal for the Law of the Sea. In 2014, India and Bangladesh resolved their maritime boundary disputes at a UN tribunal. The Rohingya refugee crisis, caused by persecution in Myanmar's Rakhine State, has been a major humanitarian and security challenge in the region. According to Sunil S. Amrith, one in four people on earth live in the countries that border the Bay of Bengal. Its littoral areas — including coastal regions of eastern India, Bangladesh, Sri Lanka, Myanmar, Thailand, Malaysia and Sumatra — are home to over half a billion