The head of Nato says its cooperation with the European Union is “more important than ever” because of Russia’s invasion of Ukraine.

Speaking at a press conference at the signing of a third joint declaration with Europe at Nato’s headquarters in Brussels, its secretary, Jens Stoltenberg, recalled the moment last February that they met to consider Valdimir Putin’s invasion.

“President Putin wanted to take Ukraine in a few days and to divide us. On both counts he has clearly failed," Stoltenberg said.

European Council president, Charles Michel, and European Commission president, Ursula von der Leyen, along with Stoltenberg, signed the declaration for cooperation on Tuesday morning.