Italy

https://www.cnbc.com/2018/05/29/heres-why-markets-are-so-scared-of-the-latest-italian-political-drama.html
Essentially people are concerned another election might bring right wing populist to power and they will leave europe.
The anti-establishment 5 star Movement and the far-right League party selected Paolo Savona as their economy minister. A combination of the two will probably win Italian election if held today

Spain

https://www.cnbc.com/2018/05/29/spain-prime-minister-rajoy-to-face-confidence-vote.html
Prime Minister Mariano Rajoy is a center right party candidate and is facing vote of confidence. If any election were to happen either the liberals win or the prime minister move to extreme right to win . The result could be same , leave eurozone

These could have cascade effect and break apart Europe and return to post world war 1 era, where populist reigned more power in many countries