Australia will reopen its international borders in November to allow vaccinated travelers into the country for the first time in 18 months. Australia banned most foreign nationals in March of last year and required its citizens to seek official permission to leave the country. Now it is preparing to reopen to the world. Under a government plan, international passengers will be able to quarantine at home for seven days rather than the current 14-day mandatory period in hotel isolation. There will be no travel restrictions for fully vaccinated Australians entering or leaving the country, although major airlines have warned they are not yet ready for a swift increase in flights. The government is also working toward quarantine-free travel with other countries, including New Zealand. Passengers who are not vaccinated, or who have received a drug that is not recognized by Australian authorities, will be required to undergo 14 days in official quarantine. Prime Minister Scott Morrison said Friday that Sydney, the New South Wales state capital, would most likely be the first city to allow international travelers back. However, he warned that domestic travel could still be restricted. “Now, Sydney is the biggest arrivals port for Australia,” he said. “Now, that is good news if you are anywhere around the world because that is where most of the flights go. Now, if you live in another state, it may well be that your state may not let you back into your state, and so you’ll need to remain in New …