The centre-left government was formed by Marjan Šarec, a novice in the national political arena, and his LMŠ party with the SocDems, Modern Centre Party (SMC), the Alenka Bratušek Party (SAB) and the Pensioners' Party (DeSUS) after the relative election winner Janez Janša and his right-wing Democrats (SDS) failed to put together a coalition.
The cabinet backed Lenarčič, put forward on Wednesday as an independent expert by Prime Minister Marjan Šarec without prior consultation with coalition partners, in a 13:3 vote.
It was the three ministers from the ranks of the SocDems who voted against, which is in keeping with the junior coalition party's criticism of Šarec picking Lenarčič instead of SocDem MEP Tanja Fajon.
The opening was attended and addressed by Prime Minister Marjan Šarec and Culture Minister Zoran Poznič.
Šarec said at a reception for Slovenian Statehood Day, which followed the opening of the exhibition, that Slovenia should be proud and happy as this was the first Slovenian exhibition in the Vatican.
The conservative alliance of the Democratic Party (SDS) and People's Party (SLS), which has been leading in the opinion polls, argues that the EU as the most advanced society must initiate environmental-friendly technological solutions.
They also believe that more should be done to switch to clean energy sources and to a circular economy.
The List of Marjan Šarec (LMŠ) came in second in last year's parliamentary elections, lagging far behind the victorious Slovenian Democratic Party (SDS). Nevertheless, LMŠ has managed to form his government by being politically savvy. Two months later at the local elections, LMŠ failed to achieve better results.
The agreement on project cooperation for 2019, which is to be signed before the National Assembly is to vote tomorrow on the supplementary budget, sets out priorities for the Left that the Marjan Šarec government has pledged to implement, such as tackling precarious forms of employment, or housing policy.