Kajin, who was the first to protest on Wednesday over an army platoon leaving for Minnesota to participate in a military exercise without the parliament's approval, recalled that no Croatian soldier had left Croatia in the past ten years without parliamentary consent.
If the parliament's approval is not necessary, why is the government sending its decision to the parliament, Kajin asked, adding that the decision had to be adopted by a two-thirds majority.
The Social Democratic Party (SDP) criticised the government and the Defence Ministry for failing to submit the decision earlier.
"This is a disgrace and someone should answer for it, because our soldiers were supposed to be in Minnesota today and participate in the exercise tomorrow," said Jozo Rados of the People's Party-Primorje-Gorski Kotar Alliance (HNS/PGS) bench.
Zlatko Kramaric of the Social Liberal Party-Democratic Centre-Liberal Party (HSLS/DC/LS) club wondered whose county's laws would be applied in case a Croatian soldier, for example, committed a traffic violation in Minnesota.
The Party of Rights (HSP) said it would support the government's proposal, but also demand some explanations from the defence minister.
Tonci Tadic of the HSP said it was not known how much the exercise would cost Croatian tax payers.
The government's decision on the participation of members of the Armed Forces in proposed multilateral and bilateral military exercises, including the one in Minnesota, was fully supported by the Croatian Democratic Union (HDZ).
Defence Minister Berislav Roncevic said that there was no disgrace or delay regarding the decision and that Croatia had the most restrictive system of sending troops outside the country and allowing the arrival of foreign soldiers.
The parliament will vote on the decision later in the day.