NATO Secretary General Jens Stoltenberg, President of the European Council Donald Tusk and President of the European Commission Jean-Claude Juncker have signed the EU-NATO Joint Declaration on the eve of the official opening of NATO summit in Warsaw July 8.

“We will also step up our response to threats from the south. Boost our support for partners. Increase our resilience against hybrid and cyber threats,” said Stoltenberg earlier. “And take our cooperation with the European Union to an ambitious new level.”

The two-day NATO summit in Warsaw will last until July 9.