Alexander Stubb took the oath of office as Finland’s new president at a ceremony in the Finnish capital Helsinki on Friday. Stubb, a 55-year-old conservative politician and former prime minister, succeeds his party colleague Sauli Niinistö, who was Finland’s head of state for 12 years. In his inaugural speech, Stubb emphasized the importance of collaboration and international cooperation. He argued that global challenges such as climate change and geopolitical conflicts cannot be solved between only like-minded countries. He called on his fellow countrymen to avoid polarization and to listen t…