Most European nationals need no visa for entering Serbia. Citizens of USA, Canada, Israel, Singapore, Japan, Australia and some other nations do not need visas either for stays up to 90 days. Citizens of the EU, Bosnia, FYR Macedonia and Montenegro need only an ID card. Check with your nearest Serbian embassy for current and detailed information. Serbia announced that visitors with Kosovan visas or passport stamps will not be allowed into the country. Currently, however, this is not the case, but the visas and stamps will be overstamped with a "cancelled" stamp. Be warned that entering Serbia through Kosovo without a Serbian entry stamp is considered as an illegal entry and can be met with stiff penalties; likewise, leaving Serbia via Kosovo is not considered legally leaving the country, so you run the risk of being charged with overstaying your entry permit if you leave Serbia via Kosovo.