Ukraine and the European Union have signed the political chapter of the Association Agreement.
The EU signed the deal hours after announcing more targeted sanctions.
Pro-Moscow leader Viktor Yanukovych’s abandonment of the deal in November had led to deadly protests, his removal and Russia taking over Crimea.
Ukraine’s interim PM Arseniy Yatsenyuk and the EU signed the deal in Brussels.
The agreement was signed by EU President Herman Van Rompuy and José Manuel Barroso, President of the European Commission
The EU Association Agreement is designed to give Ukraine’s interim leadership economic and political support.
EU President Herman Van Rompuy said in a statement that the accord “recognizes the aspirations of the people of Ukraine to live in a country governed by values, by democracy and the rule of law”.