BRUSSELS - European leaders have agreed to prepare a new strategy on foreign and security policy, European Council President Donald Tusk told a press conference on Friday following the day's summit meeting.

He expressed solidarity with France, Kuwait and Tunisia, "which have been the victims of savage terrorist attacks."

"In the context of growing security challenges, leaders agreed that the Union will prepare a new strategy on foreign and security policy," Tusk said, adding "the high representative will submit it to the European Council next June."

NATO Secretary General Jens Stoltenberg joined the meeting to discuss the new threats facing Europe "at a time of hybrid warfare,  global terrorism and cyber-attacks."

Tusk added that Europeans must invest in their own defense to deal with a dramatically changed security environment.  (Xinhua)