EU leaders took the first step towards extending their sweeping economic sanctions against Russia on Thursday night, agreeing that the measures would be maintained unless last month’s ceasefire agreement reached in Minsk was implemented in full by Moscow.

The communiqué, agreed on the first day of a two-day summit in Brussels, fell short of hopes from some hardline countries — and the summit’s host, European Council president Donald Tusk — for an immediate renewal of the sanctions, which are due to expire in July.

But by tying the measures to the Minsk agreement, which among other things requires Russia to secure its border with Ukraine and hand over its control to Ukrainian authorities, officials believe extension is now assured since the Kremlin is not expected to live up to the agreement’s terms.