Singapore is discussing the mutual recognition of vaccine certificates with other countries, Prime Minister Lee Hsien Loong said, calling it a necessary step towards resuming global travel.
Singapore, a regional travel and tourism hub, has been rolling out its COVID-19 vaccination programme over the last two months.
It has approved shots from Pfizer-BioNTech and Moderna.
"Even if each of us gears up to secure our own supplies, we must cooperate internationally so that all countries including developing ones have access to vaccines for their people," Lee said in a video recording posted on Facebook on Wednesday.
"We are also discussing mutual recognition of vaccine certification with interested countries," he said without specifying the countries.
Singapore's economy, which recorded its worst recession in 2020 due to the pandemic, is staging an uneven recovery this year and a return of more business and tourism travel would be a boost for the city state.
Greece, Spain and Britain are among other nations looking into the idea of vaccine certificates or so-called vaccine passports in a bid to revive economies and travel.
Israel is poised to send troops into Rafah, the Gazan city it sees as the last bastion of Hamas, Israeli media reported on Wednesday, saying preparations were under way to evacuate war-displaced Palestinian civilians who have been sheltering there.
Former Japanese Prime Minister Taro Aso, a senior figure in the country's ruling party, met with Donald Trump on Tuesday, becoming the latest US ally seeking to establish ties with the Republican presidential candidate.
Russian missiles damaged residential buildings and injured six people in Ukraine's second-largest city, Kharkiv, early on Wednesday, Governor Oleh Synehubov said on Telegram.
Five migrants died in an attempt to cross the English Channel from France to Britain in an overcrowded small boat on Tuesday, hours after Britain passed a bill to deport asylum seekers to Rwanda in a move to deter the dangerous journeys.
Israel bombarded northern Gaza overnight in some of the heaviest shelling in weeks, causing panic amongst residents and flattening neighbourhoods in an area from which the Israeli army had previously down its troops, residents said on Tuesday.