"The main purpose of our resolution is to protect (Slovene) national interests. We will insist on the resolution because it gives historical facts, and if we do not receive support we will consider calling a referendum on Croatia's EU membership," Jelincic told a press conference where he presented the text of the resolution.
He said that the Slovene government was incapable of protecting Slovene national interests, and added that he could not support the government's resolution on the issue because it had not yet been announced.
"This is our last chance to consolidate our national territory," Jelincic said.
According to Slovene news agency STA, Jelincic's resolution also provides that Slovenia should demand from Croatia "reparations for the Second World War" as the 1941-1945 Independent State of Croatia (NDH) had been an ally of Hitler's Germany.
Jelincic said that Croatia should be allowed to join the EU only in a package with other Western Balkan countries because otherwise Croatia might block their integration.
The SNS leader said that he would elaborate on his ideas at a session of the Foreign Ministry's Strategic Council on Wednesday and at a meeting with Prime Minister Janez Jansa on Friday.
The Slovene Parliament is expected this month to discuss the text of a possible resolution on the border with Croatia to define Slovenia's position before international arbitration or a possible new round of talks with Croatia.
The Slovene People's Party (SLS), a member of the centre-right coalition of Prime Minister Janez Jansa, has already submitted its proposal. It is not so ambitious as Jelincic's, with the party demanding "Slovene hamlets" on the left bank of the Dragonja river, the entire Bay of Savudrija, the border down the middle of the Mura river, and free access to the high seas. The SLS insists that Slovenia enjoyed these rights while it was a member of the former Yugoslav federation.