Belarus President Alexander Lukashenko signed Decree No. 8 “On the introduction of the visa-free entry and departure for foreign citizens” on 9 January, BelTA learned from the press service of the Belarusian leader. The document introduces the visa-free entry through the border checkpoint at the Minsk National Airport and the visa-free stay in Belarus for up to 5 days for the citizens of 80 states.
These are 39 countries of Europe, including the entire European Union, Brazil, Indonesia, the USA, Japan, and other countries.http://eng.belta.by/president/view/belarus-introduces-five-day-visa-free-regime-for-citizens-of-80-countries-97763-2017/
In short, citizens of EU, USA and other countries such as Japan can enter Belarus without visa for 5 days, if they arrive via international airport in Minsk, have enough money to stay for 5 days having appropriate travel insurance.