Solomon Islands Prime Minister Manasseh Sogavare has told his parliament the country was being treated like kindergarten students “walking around with Colt 45s in our hands” who needed to be supervised.

It’s the second time this week Sogavare has taken aim at Australia, having earlier labelled as “offensive” a reference to the Solomons being in Australia’s backyard.

Scott Morrison said Sogavare was free to express his opinion but it wouldn’t stop the Australian government having a relationship with the Solomon Islands.

“We’ll continue to work constructively with the Solomon Islands government as we always have,” the prime minister told the Nine Network on Thursday.

“It means that we deal with these things diplomatically, we do with it professionally, calmly, rationally in dealing with the many challenges that are in the Pacific, and that’s what we do every single day.”

Yet Morrison admitted on Wednesday he had not yet contacted Sogavare since the comments had been made.

“I’d be looking forward to the opportunity on the other side of the election to continue to manage that relationship positively,” he told reporters in Adelaide.

“We are Solomon Islands’ primary security partner. That is something that the prime minister has conveyed to me again and that is what remains the case.”

Labor foreign affairs spokeswoman Penny Wong is surprised Morrison hasn’t spoken to Sogavare.

“Quite a lot of the way in which Prime Minister Morrison has dealt with this issue has surprised me. I think Australians have been surprised,” she told ABC television.

Labor leader Anthony Albanese said a government he led would have a constructive relationship with Pacific nations, citing his party’s policy of people-to-people relationships.

“But it’s also about taking up the issues that are of great concern to them,” he told ABC radio, nominating climate change as the number one priority.