Furthermore, four European Union-Russia Common Spaces are agreed as a framework for establishing better relations. The latest EU-Russia strategic partnership was signed in ,   but it was later challenged by the European Parliament in following the annexation of Crimea and the war in Donbass. The Russia—Ukraine gas dispute of damaged Russia's reputation as a gas supplier. In September , the European Commission EC opened an antitrust investigation relating to Gazprom 's contracts in central and eastern Europe. The commission's investigation was delayed due to Russia's military intervention in Ukraine.
This page contains a timeline of significant events regarding same-sex marriage and legal recognition of same-sex couples worldwide. It begins with the history of same-sex unions during ancient times, which consisted of unions ranging from informal and temporary relationships to highly ritualized unions, and continues to modern-day state-recognized same-sex marriage. Events concerning same-sex marriages becoming legal in a country or in a country's state are listed in bold. Various types of same-sex marriages have existed,  ranging from informal, unsanctioned relationships to highly ritualized unions. Cicero mentions the marriage using the Latin verb for "to marry", i. Cicero states thus that the younger Curio was "united in a stable and permanent marriage" to Antonius.